{
  "title": "Ray, Line & Line Segment - Grade 4",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "Which has two endpoints?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 2, "difficulty": "easy", "question": "Which goes on forever in both directions?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 3, "difficulty": "easy", "question": "Which has one endpoint and goes on forever in one direction?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Angle"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "How many endpoints does a ray have?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "How many endpoints does a line have?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "A"},
    {"id": 6, "difficulty": "easy", "question": "Which is the shortest distance between two points?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Curve"}, "correct_answer": "C"},
    {"id": 7, "difficulty": "easy", "question": "What do we call a straight path that goes on forever in both directions?", "options": {"A": "Ray", "B": "Line segment", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "Which symbol has arrows on both ends?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 9, "difficulty": "easy", "question": "Which symbol has an arrow on one end only?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Angle"}, "correct_answer": "B"},
    {"id": 10, "difficulty": "easy", "question": "Which has no endpoints?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 11, "difficulty": "easy", "question": "What is represented by a dot?", "options": {"A": "Line", "B": "Ray", "C": "Point", "D": "Line segment"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "Which is part of a line between two points?", "options": {"A": "Ray", "B": "Line segment", "C": "Line", "D": "Point"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "How many endpoints does a line segment have?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "Which starts at a point and goes on forever?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Angle"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "What is the name for AB with arrows on both ends?", "options": {"A": "Line AB", "B": "Ray AB", "C": "Line segment AB", "D": "Point AB"}, "correct_answer": "A"},
    {"id": 16, "difficulty": "easy", "question": "What is the name for AB with no arrows?", "options": {"A": "Line AB", "B": "Ray AB", "C": "Line segment AB", "D": "Point AB"}, "correct_answer": "C"},
    {"id": 17, "difficulty": "easy", "question": "What is the name for AB with an arrow at B?", "options": {"A": "Line AB", "B": "Ray AB", "C": "Line segment AB", "D": "Point AB"}, "correct_answer": "B"},
    {"id": 18, "difficulty": "easy", "question": "Which can be measured?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 19, "difficulty": "easy", "question": "Which cannot be measured?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Both B and C"}, "correct_answer": "D"},
    {"id": 20, "difficulty": "easy", "question": "What is formed when two rays share an endpoint?", "options": {"A": "Line", "B": "Line segment", "C": "Angle", "D": "Point"}, "correct_answer": "C"},
    {"id": 21, "difficulty": "medium", "question": "If point C is between points A and B, what is AC + CB equal to?", "options": {"A": "AB", "B": "BC", "C": "AC", "D": "BA"}, "correct_answer": "A"},
    {"id": 22, "difficulty": "medium", "question": "How many line segments can be drawn through two points?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "B"},
    {"id": 23, "difficulty": "medium", "question": "How many lines can be drawn through one point?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "D"},
    {"id": 24, "difficulty": "medium", "question": "If ray AB and ray AC form a straight line, what type of angle do they form?", "options": {"A": "Acute angle", "B": "Right angle", "C": "Obtuse angle", "D": "Straight angle"}, "correct_answer": "D"},
    {"id": 25, "difficulty": "medium", "question": "What is the intersection of two lines?", "options": {"A": "Line segment", "B": "Ray", "C": "Point", "D": "Angle"}, "correct_answer": "C"},
    {"id": 26, "difficulty": "medium", "question": "How many rays can be drawn from a single point?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "D"},
    {"id": 27, "difficulty": "medium", "question": "If two lines never meet, they are called:", "options": {"A": "Intersecting lines", "B": "Parallel lines", "C": "Perpendicular lines", "D": "Ray lines"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "What is formed by two rays with a common endpoint?", "options": {"A": "Line segment", "B": "Line", "C": "Angle", "D": "Point"}, "correct_answer": "C"},
    {"id": 29, "difficulty": "medium", "question": "Which has a definite length?", "options": {"A": "Line", "B": "Ray", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 30, "difficulty": "medium", "question": "What is the common endpoint of an angle called?", "options": {"A": "Vertex", "B": "Arm", "C": "Line", "D": "Point"}, "correct_answer": "A"},
    {"id": 31, "difficulty": "medium", "question": "How many points are needed to draw a line segment?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 32, "difficulty": "medium", "question": "What is the name for a line that has a beginning but no end?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "If two lines cross each other, they are called:", "options": {"A": "Parallel lines", "B": "Intersecting lines", "C": "Ray lines", "D": "Line segments"}, "correct_answer": "B"},
    {"id": 34, "difficulty": "medium", "question": "What is the name for a straight path between two points?", "options": {"A": "Ray", "B": "Line", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 35, "difficulty": "medium", "question": "How many line segments are needed to make a triangle?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "B"},
    {"id": 36, "difficulty": "medium", "question": "What is the name for a location in space?", "options": {"A": "Line", "B": "Ray", "C": "Point", "D": "Line segment"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "If two lines meet at a right angle, they are called:", "options": {"A": "Parallel lines", "B": "Intersecting lines", "C": "Perpendicular lines", "D": "Ray lines"}, "correct_answer": "C"},
    {"id": 38, "difficulty": "medium", "question": "What is the name for a part of a line that has one endpoint?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "How many points are needed to name a line?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 40, "difficulty": "medium", "question": "What is the name for a set of points that extends in two opposite directions?", "options": {"A": "Ray", "B": "Line segment", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "If point D lies on line segment AB, what can we say about AD + DB?", "options": {"A": "AD + DB < AB", "B": "AD + DB > AB", "C": "AD + DB = AB", "D": "AD + DB = 0"}, "correct_answer": "C"},
    {"id": 42, "difficulty": "medium", "question": "How many line segments are in a square?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "C"},
    {"id": 43, "difficulty": "medium", "question": "What is the name for the points where line segments meet?", "options": {"A": "Vertices", "B": "Arms", "C": "Endpoints", "D": "Midpoints"}, "correct_answer": "A"},
    {"id": 44, "difficulty": "medium", "question": "If two rays point in opposite directions, what do they form?", "options": {"A": "Line segment", "B": "Line", "C": "Angle", "D": "Point"}, "correct_answer": "B"},
    {"id": 45, "difficulty": "medium", "question": "What is the name for a line that is bounded by two points?", "options": {"A": "Ray", "B": "Line", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 46, "difficulty": "medium", "question": "How many rays are needed to form an angle?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "medium", "question": "What is the name for a line that has no endpoints?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "medium", "question": "If three points are on the same line, they are called:", "options": {"A": "Collinear points", "B": "Non-collinear points", "C": "Parallel points", "D": "Intersecting points"}, "correct_answer": "A"},
    {"id": 49, "difficulty": "medium", "question": "What is the name for a line that has a fixed length?", "options": {"A": "Ray", "B": "Line", "C": "Line segment", "D": "Point"}, "correct_answer": "C"},
    {"id": 50, "difficulty": "medium", "question": "How many vertices does a straight angle have?", 
"options": {"A": "0", "B": "1", "C": "2", "D": "3"}, 
"correct_answer": "B"}
, {"id": 51, "difficulty": "medium", "question": "What is the name for a line that is cut into two equal parts?", "options": {"A": "Ray", "B": "Line segment", "C": "Bisected line", "D": "Parallel line"}, "correct_answer": "C"},
    {"id": 52, "difficulty": "medium", "question": "If two lines are parallel, how many times do they meet?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "A"},
    {"id": 53, "difficulty": "medium", "question": "What is the name for a line that is not straight?", "options": {"A": "Ray", "B": "Line segment", "C": "Curve", "D": "Point"}, "correct_answer": "C"},
    {"id": 54, "difficulty": "medium", "question": "How many line segments are in a pentagon?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 55, "difficulty": "medium", "question": "What is the name for a line that has a start point but no end point?", "options": {"A": "Line segment", "B": "Ray", "C": "Line", "D": "Point"}, "correct_answer": "B"},
    {"id": 56, "difficulty": "medium", "question": "If two lines intersect, how many points do they have in common?", "options": {"A": "0", "B": "1", "C": "2", "D": "Infinite"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "What is the name for a line that is perfectly horizontal?", "options": {"A": "Vertical line", "B": "Horizontal line", "C": "Diagonal line", "D": "Curved line"}, "correct_answer": "B"},
    {"id": 58, "difficulty": "medium", "question": "How many rays can form a straight angle?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "medium", "question": "What is the name for a line that is perfectly vertical?", "options": {"A": "Horizontal line", "B": "Vertical line", "C": "Diagonal line", "D": "Curved line"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "medium", "question": "If three points are not on the same line, they are called:", "options": {"A": "Collinear points", "B": "Non-collinear points", "C": "Parallel points", "D": "Intersecting points"}, "correct_answer": "B"},
    {"id": 61, "difficulty": "hard", "question": "How many line segments can be drawn through three non-collinear points?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "C"},
    {"id": 62, "difficulty": "hard", "question": "What is the maximum number of intersection points for 4 lines in a plane?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 63, "difficulty": "hard", "question": "If two lines are perpendicular, what angle do they form?", "options": {"A": "Acute angle", "B": "Right angle", "C": "Obtuse angle", "D": "Straight angle"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "hard", "question": "How many line segments are needed to form a closed shape?", "options": {"A": "2", "B": "3", "C": "4", "D": "Depends on the shape"}, "correct_answer": "D"},
    {"id": 65, "difficulty": "hard", "question": "What is the name for a line that divides an angle into two equal parts?", "options": {"A": "Parallel line", "B": "Perpendicular line", "C": "Angle bisector", "D": "Line segment"}, "correct_answer": "C"},
    {"id": 66, "difficulty": "hard", "question": "If three lines intersect at one point, how many angles are formed?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "D"},
    {"id": 67, "difficulty": "hard", "question": "What is the name for a line that is drawn from a vertex to the midpoint of the opposite side in a triangle?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "hard", "question": "How many line segments are in a hexagon?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 69, "difficulty": "hard", "question": "What is the name for a line that is drawn from a vertex perpendicular to the opposite side in a triangle?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "C"},
    {"id": 70, "difficulty": "hard", "question": "If four points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 71, "difficulty": "hard", "question": "What is the name for a line that divides a line segment into two equal parts at right angles?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "D"},
    {"id": 72, "difficulty": "hard", "question": "How many diagonals does a quadrilateral have?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 73, "difficulty": "hard", "question": "What is the name for a line that is drawn from the center of a circle to any point on the circle?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "C"},
    {"id": 74, "difficulty": "hard", "question": "If five points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "8", "B": "9", "C": "10", "D": "11"}, "correct_answer": "C"},
    {"id": 75, "difficulty": "hard", "question": "What is the name for a line that touches a circle at exactly one point?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "D"},
    {"id": 76, "difficulty": "hard", "question": "How many line segments are in a octagon?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 77, "difficulty": "hard", "question": "What is the name for a line that passes through the center of a circle and touches two points on the circle?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "A"},
    {"id": 78, "difficulty": "hard", "question": "If six points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "12", "B": "13", "C": "14", "D": "15"}, "correct_answer": "D"},
    {"id": 79, "difficulty": "hard", "question": "What is the name for a line that connects two points on a circle but does not pass through the center?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "B"},
    {"id": 80, "difficulty": "hard", "question": "How many diagonals does a pentagon have?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 81, "difficulty": "hard", "question": "What is the name for a line that is drawn from the center of a polygon to a vertex?", "options": {"A": "Apothem", "B": "Radius", "C": "Diagonal", "D": "Median"}, "correct_answer": "B"},
    {"id": 82, "difficulty": "hard", "question": "If seven points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "18", "B": "19", "C": "20", "D": "21"}, "correct_answer": "D"},
    {"id": 83, "difficulty": "hard", "question": "What is the name for a line that is drawn from the center of a polygon perpendicular to a side?", "options": {"A": "Apothem", "B": "Radius", "C": "Diagonal", "D": "Median"}, "correct_answer": "A"},
    {"id": 84, "difficulty": "hard", "question": "How many diagonals does a hexagon have?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "D"},
    {"id": 85, "difficulty": "hard", "question": "What is the name for a line that is drawn from a vertex to the midpoint of the opposite side in a triangle?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "B"},
    {"id": 86, "difficulty": "hard", "question": "If eight points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "26", "B": "27", "C": "28", "D": "29"}, "correct_answer": "C"},
    {"id": 87, "difficulty": "hard", "question": "What is the name for a line that divides an angle into two equal parts?", "options": {"A": "Parallel line", "B": "Perpendicular line", "C": "Angle bisector", "D": "Line segment"}, "correct_answer": "C"},
    {"id": 88, "difficulty": "hard", "question": "How many diagonals does a heptagon have?", "options": {"A": "11", "B": "12", "C": "13", "D": "14"}, "correct_answer": "D"},
    {"id": 89, "difficulty": "hard", "question": "What is the name for a line that is drawn from a vertex perpendicular to the opposite side in a triangle?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "C"},
    {"id": 90, "difficulty": "hard", "question": "If nine points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "34", "B": "35", "C": "36", "D": "37"}, "correct_answer": "C"},
    {"id": 91, "difficulty": "hard", "question": "What is the name for a line that divides a line segment into two equal parts at right angles?", "options": {"A": "Angle bisector", "B": "Median", "C": "Altitude", "D": "Perpendicular bisector"}, "correct_answer": "D"},
    {"id": 92, "difficulty": "hard", "question": "How many diagonals does a octagon have?", "options": {"A": "18", "B": "19", "C": "20", "D": "21"}, "correct_answer": "C"},
    {"id": 93, "difficulty": "hard", "question": "What is the name for a line that is drawn from the center of a circle to any point on the circle?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "C"},
    {"id": 94, "difficulty": "hard", "question": "If ten points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "43", "B": "44", "C": "45", "D": "46"}, "correct_answer": "C"},
    {"id": 95, "difficulty": "hard", "question": "What is the name for a line that touches a circle at exactly one point?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "D"},
    {"id": 96, "difficulty": "hard", "question": "How many diagonals does a nonagon have?", "options": {"A": "24", "B": "25", "C": "26", "D": "27"}, "correct_answer": "D"},
    {"id": 97, "difficulty": "hard", "question": "What is the name for a line that passes through the center of a circle and touches two points on the circle?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "A"},
    {"id": 98, "difficulty": "hard", "question": "If eleven points are on a circle, how many line segments can be drawn connecting them?", "options": {"A": "53", "B": "54", "C": "55", "D": "56"}, "correct_answer": "C"},
    {"id": 99, "difficulty": "hard", "question": "What is the name for a line that connects two points on a circle but does not pass through the center?", "options": {"A": "Diameter", "B": "Chord", "C": "Radius", "D": "Tangent"}, "correct_answer": "B"},
    {"id": 100, "difficulty": "hard", "question": "How many diagonals does a decagon have?", "options": {"A": "32", "B": "33", "C": "34", "D": "35"}, "correct_answer": "D"}
  ]
}