Across
- 3. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides
- 4. a plane figure with four equal straight sides and four right angles.
- 6. a angle less then 90 degrees
- 7. a triangle with all equal sides
- 10. a angle exactly 90 degrees
- 11. a angle more then 90 degrees
Down
- 1. all 4 side shapes are this
- 2. a triangle that contains an obtuse interior angle
- 5. a plane figure with at least three straight sides and angles, and typically five or more
- 8. a triangle that has at least 3 acute angles
- 9. a plane figure with three straight sides and three angles