Across
- 4. Lines Two lines that intersect at a 90° angle.
- 6. An angle that measures exactly 180°.
- 8. An angle that measures less than 90°.
- 9. A flat surface that extends infinitely in all directions.
- 10. A triangle with no congruent sides.
- 12. A polygon with five sides.
- 13. Two angles that share a common side and vertex.
- 15. A line or ray that divides an angle into two equal parts.
- 18. A polygon with six sides.
- 19. Angles that have the same measure.
- 20. A pair of adjacent angles whose sum is 180°.
Down
- 1. A rule that proves two triangles are identical (SSS, SAS, ASA, AAS, HL).
- 2. A part of a line with two endpoints.
- 3. A quadrilateral with four equal sides and four right angles.
- 5. A geometric property stating that any figure is congruent to itself.
- 7. A triangle with two congruent sides.
- 11. Angles Two angles whose sum is 90°.
- 14. A location in space with no size.
- 16. A straight path that extends infinitely in both directions.
- 17. A part of a line that starts at one point and extends infinitely in one direction.