Across
- 4. on the same plane
- 7. having the same length
- 9. lines that never intersect
- 11. represented by a dot
- 13. one the same line
- 15. has endpoint extends indefinitely in one direction
- 16. this type of letter can be used to name a line
- 17. created by 3 noncollinear points
- 18. piece of a line
Down
- 1. lines that cross each other at 1 point
- 2. angles that measure 90 degrees
- 3. point 1/2 way or in the middle of a segment
- 5. lines that intersect creating right angle
- 6. 3 sided figure
- 8. this type of letter is used to name a plane
- 10. letter used in equation representing a unknown number
- 12. created by 2 rays with a common endpoint
- 14. extends indefinitely in both directions