Math crossword

1. Exactly equal in size and shape.
4. The distance around the outside of a figure.
6. Identical in shape, although not necessarily the same size.
8. A ratio of numbers or variables.
9. The set of y-values of a function or relation.
12. A way of remembering how to compute the sine, cosine, and tangent of an angle.
13. The geometric figure formed by two points.
14. The mathematics of working with variables.

1. The number multiplied times a product of variables or powers of variables in a term.
2. The result of adding a set of numbers.
3. A corner or a point where lines meet.
5. A polygon with three sides.
7. All positive and negative whole numbers (including zero).
10. A quantity that can change or that may take on different values.
11. A u-shaped curve with certain specific properties.
14. Two rays sharing a common endpoint.