Math Crossword.. help me plz!?

Question

1. The two sides of a triangle which form the right angle (4 letters)
2. Having congruent side lengths (11 letters)
3. An angle that forms a linear pair with one of the angles of a triangle. (13 letters)
4. A statement that can be easily proven using a theroem (9 letters)
5. Either angle formed by the base and one of the legs is an isosceles triangle. (9 letters 2 words)
6. An angle formed by 2 given sides (13 letters 2 words)

These all have to do with congruent triangles, but i'm horrible at vocabulary and I don't have a word bank.

*Whoevers gives me the most original correct answers wins*

These are all worded ridiculously... its aggrovating, but thanks for the help

Answer 1

1. LEGS
2. EQUILATERAL
3. EXTERIOR ANGLE
4. CORROLARY
5. BASE ANGLE

#6 doesn't really make a lot of sense. Is something missing, like which specific sides are involved? (The best I can come up with is ADJACENT ANGLE.)