Across
- 5. A 4-sided polygon whose opposite sides are parallel and equal in length
- 9. A triangle with two sides of equal length and two equal angles
- 10. Part of a line bounded by two points
- 11. A triangle with three sides of equal length
- 12. A triangle with a 90-degree angle
- 13. A rectangle with all equal sides
Down
- 1. A parallelogram with interior right and angles pairs of equal length sides
- 2. A quadrilateral with parallel opposite sides
- 3. A point that divides a line segment exactly in half
- 4. The ratio of a line's rise to run, or steepness
- 6. A parallelogram with four equal length sides
- 7. A triangle with no equal side lengths and no equal angles
- 8. The square root of the sum of the squares of a line segment's rise and run