UNIT 0 GEOMETRY VOCABULARY

4. a straight row of points that goes on forever in both directions
7. an angle that measures more than 90° but less than 180°
9. two angles whose measures sum to 90°
13. a two-dimensional figure that begins and ends at the same point
15. a two-dimensional shape in which every point is the same distance from the center
16. two angles whose measures sum to 180°
21. a polygon with exactly 4 sides and 4 angles
23. a set of points and lines in space
24. a specific point that marks the end of a line segment or the beginning of a ray
25. a triangle that has all three sides the same length
27. a single location in space
28. a triangle that has at least two sides the same length
29. a triangle that has one obtuse angle
30. a straight row of points that starts at one point and ends at another point
31. flat, or having measurement in two directions (like length and width)

1. a triangle that has no sides the same length
2. solid, or having measurements in three directions (like length, width, and height)
3. two angles that share a vertex and a side and do not overlap
5. an angle that measures more than 0° but less than 90°
6. a two-dimensional closed figure made with three or more straight line segments that meet only at their endpoints
8. a geometric shape formed by two rays, lines, or line segments that meet at a common point
10. a triangle with one right angle
11. an angle that measures 90°
12. when two or more geometric figures (like lines, segments, or planes) meet or cross each other, sharing at least one common point
14. a unit used to measure angles
16. a line segment that forms part of a two-dimensional shape
17. a tool used to find the exact measurement of an angle
18. a part of a line that has one endpoint and goes on forever in one direction
19. an angle that measures 180°
20. the point where two rays, lines, or line segments meet to form an angle
22. two lines that meet to form a right angle, or a 90° angle
26. the opposite angles formed when two lines intersect