Across
- 2. Angles that sum to 180 degrees
- 4. Angles that are on opposite sides of intersecting lines
- 5. A quadrilateral with two pairs of parallel sides
- 7. Angles that sum to 90 degrees
- 11. A three-sided closed figure
- 12. A quadrilateral with one pair of parallel sides
- 14. A transformation that flips a figure across a line
Down
- 1. A transformation that moves a figure without rotating or flipping it
- 3. A famous theorem: a² + b² = c²
- 6. A figure with exactly four sides and four right angles
- 8. Angles that share a common side
- 9. A four-sided figure with all sides equal and all angles right angles
- 10. A half-circle shape
- 13. A closed figure with straight sides
- 15. A type of figure where all points are equidistant from the center