Across
- 1. The point where the two sides of an angle meet.
- 4. Unable to bend or be forced out of shape; not flexible.
- 7. A triangle that has two sides of equal length.
- 9. A triangle where all three of the angles are equal to each other.
- 11. Any two angles whose measures add up to 180 degrees.
- 12. It is a three-sided polygon.
Down
- 2. A triangle where all three of the sides are equal to each other.
- 3. Having the same size and shape.
- 5. A triangle where one of its interior angles measures more than 90 degrees.
- 6. A triangle where all three interior angles measure less than 90 degrees.
- 8. A triangle where all three sides are of different lengths.
- 10. A triangle in which one of the interior angles is 90 degrees.