Topic 14

1. angle- square corner
5. triangle- three obtuse angles
7. triangle- one right angle
8. a part of a line that has one endpoint and continues on forever in the other direction
10. segment- a part of a line with 2 endpoints
12. lines- a pair of lines that pass through the same point
13. angle- larger than 90 degrees
17. angle- smaller than 90 degrees
18. when a shape can be divided in half and each half is exactly the same
19. triangle- no equal sides
20. two pairs of parallel sides

1. quadrilateral that has 2 pairs of parallel sides and all sides are the same length
2. one pair of parallel sides
3. angle- forms a straight line
4. lines- a pair of lines that form 4 right angles
6. lines- a pair of lines that never intersect
9. an exact location in space
11. triangle- at least 2 equal sides
14. triangle- three equal sides
15. an endless flat surface
16. triangle- three acute angles