Trigonometry

4. Greek symbol for angles in trig
9. Proving if all the three sides of a triangle are in proportion to the three sides of another triangle, then the two triangles are similar.
10. Opposite over hypotenuse
11. Adjacent over hypotenuse
13. Inverted function of tangent
14. An angle that measures less than 90 degrees
15. Proving when you've got two triangles and the ratio of two of their sides are the same, plus one of their angles are equal, then the two triangles are similar are similar
16. An angle that measures 90 degrees

1. A^2+B^2=c^2 if and only if I have a right triangle
2. Proving if two angles of one triangle are respectively equal to two angles of another then the two triangles are similar
3. The ratio between the scale of a given original object to a similar object
5. A subject within geometry about triangles
6. Inverted sine function
7. many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit is 6:8
8. The longest side of a right triangle
12. An angle that measures more than 90 degrees