Across
- 2. are lines that intersect at right angles
- 4. 180 degree angle
- 6. A figure formed by two line segments
- 8. a part of a line that has one endpoint
- 9. Extending infinitely in both direction
- 10. a set of points on a line
Down
- 1. 90 degree angle
- 3. less than 90 degrees
- 5. A endpoint of two sides of a angle.
- 7. a mark on a graph