Math proof crossword

4. The base of an isosceles triangle forms a 3rd __________ side.
7. What Theorem would you use if you had a right angle, a leg, and a hypotenuse?
10. If a triangle is equal-lateral, then it is also ____________.
15. How many steps must you use to prove that a triangle is a right triangle?
16. If 2 angles in a triangle are congruent to the 2 corresponding angles in another triangle, then they are__________.
17. A statement that follows imediately after the theorem is a _____.
20. True/False: CPCTC can only be used after the triangles have been proved congruent.

1. What acronym tells us that coresponding sides are congruent?
2. What is the longest side of a right triangle called?
3. The bisector of the vertex angle of an Isosceles triangle is the _____ bisector of the base.
5. If a triangle is equal-angular, then it is also ____________.
6. True/False: If 2 triangles are congruent, only the indicated sides are congruent.
8. The _____ of an isosceles triangle form 2 congruent angles.
9. What property is it when the lines or angles go the same way? ( <ABC=<DEF )
11. The reason you can start any proof with.
12. If 2 angles and a non-included side are congruent in 2 triangles, then the triangles are congruent by _____.
13. If 2 angles of a triangle are congruent, then the 2 _________ sides are also congruent.
14. What acronym tells us that angles vertical each other are congruent?
18. If two sides of a triangle are congruent, then the angles _____ are congruent.
19. The base angles in an isosceles triangle are formed by the base and the _____.