Across
- 4. refers usually to an element of some
- 5. like a mirror.
- 8. a pair of lines that are non-
- 10. 180°
- 12. called a space
- 13. the equation of a straight line
Down
- 1. this makes a 90° angle
- 2. a piece or part of a line having two
- 3. 2 lines that do not intersect
- 4. a straight line in geometry used
- 6. two lines that are perpendicular to
- 7. line using its slope 'm' and a
- 9. 2 dimensional object
- 11. a straight _.
- 14. represent the equation of a