Across
- 5. a tool used to draw circles and to measure the distance between two points
- 6. a parallelogram with four equal sides
- 8. a quadrilateral with a pair of parallel sides
- 9. a quadrilateral with two pairs of parallel sides
- 10. a well-defined collection of items
- 12. a triangle with three equal sides
- 17. all elements that are in both A and B
Down
- 1. a tool used to measure angles
- 2. all elements that are in A, in B, or in both A and B
- 3. a triangle with two equal sides
- 4. a triangle with no equal sides
- 7. a parallelogram with four equal sides and four right angles
- 11. “or” in logic
- 13. a polygon with four sides
- 14. a parallelogram with four right angles
- 15. a set having no elements
- 16. “and” in logic