Across
- 4. have four equal sides
- 6. the answer to a subtraction problem
- 10. figure with two pairs of equal sides
- 12. more than ninety degrees, but less than a hundred and eighty degrees
- 13. numbers in an addition problem
Down
- 1. the answer to an addition problem
- 2. the sum of all the sides of a figure
- 3. the likelihood of an event occurring
- 4. triangle with no equal side or angles
- 5. triangle with two equal sides and angles
- 7. angles that measure ninety degrees
- 8. the space occupied by a flat shape
- 9. the answer to a multiplication problem
- 11. angles measuring less than ninety degrees