Across
- 2. Triangle with one right angle
- 4. Triangle with three congruent sides
- 8. Triangle with two congruent sides
- 10. The measure of the exterior angle equals the sum of the opposite interior angles
Down
- 1. Triangle with one obtuse angle
- 3. Triangle with no congruent sides
- 5. The sum of the interior angles of a triangle add up to 180 degrees
- 6. Angle inside of a polygon
- 7. Triangle with three congruent angles
- 9. Angle formed by extending a side of a polygon
- 11. Triangle with three acute angles