Across
- 4. A technical drawing instrument that can be used for inscribing circles or arcs.
- 7. Cuts a line segment into two congruent parts and passes through the midpoint
- 8. An angle that equals 180 degrees
- 11. A proposition or statement that is demonstrated
- 15. An angle that measures less that 180 degrees and more than 90 degrees
- 18. A point, line, or curve common to two or more objects
- 19. The process of arriving at a conclusion based on a set of observations. .
- 20. Any of the two furthest points on a line segment.
- 21. A location represented by a dot
Down
- 1. The basic structure from which lemmas and theorems are derived.
- 2. Having the same shape and size
- 3. An infinitely thin, infinitely long collection of points extending in two opposite directions.
- 5. A combination of two rays (half-lines) with a common endpoint
- 6. An angle that measures 90 degrees
- 9. A part of a line that has one endpoint and goes on infinitely in only one direction.
- 10. An angle that measures less than 90 degrees.
- 12. A part of a line that is bounded by two distinct end points
- 13. The angle between a side of a polygon and an extended adjacent side.
- 14. Points on the same line.
- 16. A measuring instrument, typically made of transparent plastic or glass, for measuring angles.
- 17. The middle point of a line segment.