Across
- 4. A triangle that has one obtuse angle
- 6. A triangle that has two sides with the same length
- 9. A parallelogram that has four right angles
Down
- 1. A triangle that has three sides with the same length
- 2. A triangle that has three acute angles
- 3. A quadrilateral that has exactly one pair of parallel sides
- 5. A parallelogram that has four sides with the same length
- 7. A triangle that has no sides with the same length
- 8. A quadrilateral that has two pairs of parallel sides