Across
- 3. Lines that intersect at a right angle (90 degrees)
- 5. representing the same, equal, quantity
- 7. The answer to a subtraction problem
- 8. A symbol (usually a letter) that represents an unknown value
- 10. The answer to a multiplication problem
- 11. The distance across a circle through the center
- 13. The value of the variable that makes the equation true
Down
- 1. Lines that run side-by-side and never intersect
- 2. Having the same size and shape
- 4. An operation that reverses the effect of another operation
- 6. The answer to a division problem
- 9. The answer to an addition problem.
- 12. The distance from the center of a circle to any point on the circle