Across
- 4. triangle with three acute angles
- 6. angle theorem, the two remote interior angles of a triangle are equal to the exterior angle
- 7. triangle with three congruent angles
- 8. triangle with three congruent sides
- 9. triangle with two congruent sides
Down
- 1. triangle with one right angle
- 2. sum theorem, theorem that states the sum of the angles of a triangle is 180 degrees
- 3. triangle with one obtuse angle
- 5. triangle with no congruent sides