Math Vocabulary

2. – an angle whose measure is exactly 180 degrees
3. lines two lines that intersect to form square corners or right angles
5. – opposite sides equal, 4 right angles, 2 pair of parallel sides
7. – an angle whose measure is between 0 and 90 degrees
8. has one endpoint and continues without end in one direction
13. triangle a triangle with no equal sides, angles measure 180 degrees
16. angles 2 angles whose measures have a sum of 90 degrees
17. triangle a triangle with exactly 2 equal sides, angles measure 180 degrees
21. a straight path of points that goes on forever in two directions
23. – 4 equal sides, 4 right angles, 2 pair of parallel sides
25. two rays that have the same endpoint
26. figures that have the same shape, but not the same size
28. a polygon with 5 sides
29. – an angle whose measure is exactly 90 degrees
31. – an angle whose measure is between 90 and 180 degrees
32. triangle a triangle that has a right angle
33. lines lines that cross at one point

1. – opposite sides equal, 2 pair of parallel sides
4. a polygon with 6 sides
6. lines lines that never cross and stay the same distance apart
9. a solid figure with 6 square faces, 12 edges, and 8 vertices Ex. a box
10. – 4 equal sides, 2 pair of parallel sides
11. a four sided polygon, angles measure 360 degrees
12. a solid figure with 2 circular faces, 0 edges, and 0 vertices Ex. a roll of paper towels
14. a solid figure with 1 circular face, 0 edges, and 0 vertices Ex. a party hat
15. of symmetry the fold line in a symmetrical figure
18. figures that have the same shape and size
19. the change in position of a figure by flipping it over a horizontal or vertical line
20. a polygon with 8 sides
21. segment part of a line that includes two endpoints
22. triangle a triangle with 3 equal sides, angles measure 180 degrees
24. – one pair of parallel sides
27. an exactly point in space
30. a polygon with 7 sides