Across
- 7. another word used to describe the height of a triangle or quadrilateral
- 9. a quadrilateral with two pairs of equal, parallel, sides
- 10. the longest side of a right triangle
- 12. a quadrilateral with two pairs of equal, perpendicular, sides
- 13. a four-sided polygon
- 14. a quadrilateral with equal side lengths
- 16. a line (segment) that connects non-consecutive vertices of polygons
- 17. an angle that is less than 90°
- 18. angles that add together to make 90°
- 19. 90° angle
- 20. 180° angle
Down
- 1. angles that add together to make 180°
- 2. a polygon with equal sides and equal interior angles
- 3. made of a number of different shapes, when deconstructed
- 4. a²+b²=c²
- 5. two lines that are equally distant and that will never intersect
- 6. a closed 2D shape made of straight lines
- 8. an angle between 90° and 180°
- 11. a six-sided polygon
- 15. two lines that meet at a 90° angle