Across
- 1. π
- 2. a part of a line that has a fixed starting point but no end point.
- 3. formed by two rays
- 6. a straight one- dimensional figure that has no thickness and extends endlessly in both directions
- 9. deg
- 10. Δ
- 11. ′
- 13. are line that intersect at a right (90 degrees) angle.
Down
- 1. lines in a plane that are always the same distance apart and never intersects.
- 2. an angle measured exactly 90 degrees.
- 4. ″
- 5. the amount of space between two points
- 7. is any smooth curve joining two points.
- 8. ≅
- 12. rad
- 14. is a piece or part of a line having two endpoints.