Across
- 2. a quadrilateral with exactly one pair of parallel sides
- 4. a parallelogram with four right angles and four congruent sides
- 5. a line that intersects two other lines in different points
- 9. a triangle with at least two sides congruent
- 12. a quadrilateral with two pairs of opposite sides that are parallel
- 13. the distance around the circle
- 14. a triangle with one angle larger than 90 degrees
- 15. two angles whose sum is 180 degrees
Down
- 1. a triangle with one angle measuring 90 degrees
- 3. two angles that share a vertex and a side but have no common interior points
- 6. a triangle with angles each measuring less than 90 degrees
- 7. a type of angle formed by intersecting lines
- 8. a parallelogram with four right angles
- 10. two angles whose sum is 90 degrees
- 11. a triangle with no congruent sides