Across
- 5. the sum of their measures is 180-degrees
- 8. the sum of their measures is 90-degrees
- 11. An exact location in space
- 12. an angle equal to 90 degrees
- 13. consists of two rays that have a common endpoint called the vertex of the angle
- 14. an angle greater than 90 degrees but less than 180 degrees
- 15. two angles with equal measure formed by two intersecting lines
Down
- 1. an angle less than 90 degrees
- 2. lines that meet at a 90-degree angle
- 3. an angle equal to 180 degrees
- 4. a part of a line having two endpoints
- 6. A part of a line having only one endpoint
- 7. the endpoint where two rays, line segments, or edges meet
- 9. a flat surface that extends forever
- 10. lines that never meet
