Across
- 2. a triangle with a right angle
- 5. a parallelogram with all congruent sides
- 6. a parallelogram with four right angles
- 7. a triangle with three congruent sides
- 9. a triangle with no congruent sides
- 10. a triangle with three acute angles
- 11. any quadrilateral that has opposite sides parallel and congruent
Down
- 1. a rectangle with 4 congruent sides
- 3. a triangle with two congruent sides
- 4. a triangle with one obtuse angle
- 8. a quadrilateral with only 1 pair of parallel sides