Triangle Concepts

6. An angle that measure more than 0, but less than 90 degrees.
8. If every angle in a triangle measures 60 degrees, then it is a(n) ____________ triangle.
9. In an isosceles triangle, the _____ angles are congruent.
10. The acute angles in a right triangle always add to 90 degrees - which means they are _____.
13. Two angles whose measures add to 180 degrees are called ______ angles.
16. If a triangle has an angle that measures more than 90 degrees, then it is a(n) _______triangle.
19. A triangle with no congruent sides.
20. The math class where you learn about shapes.
21. The name of the congruent sides in an isosceles triangle.
22. If a base angle in an isosceles triangle measures 50 degrees, then the measure of the vertex angle is ____ degrees.
23. The Exterior Angle Theorem tells us the measure of the exterior angle of a triangle is equal to the ___ of the remote interior angles.

1. The theorem that tells us the sum of the angles in any triangle is 180 degrees.
2. The longest side in a right triangle.
3. According to the Triangle _______ Theorem, the shortest side in a triangle is across from the smallest angle.
4. Two angles that are next to each other and make a line.
5. The special theorem for right triangles that tells us, "a squared + b squared = c ______."
7. A triangle with 3 congruent sides.
11. If the measure of two angles in a triangle are 30 degrees and 100 degrees, then the measure of the other angle is _________degrees.
12. A triangle with at least 2 congruent sides.
14. The type of angle that is outside of the triangle but adjacent to it.
15. A shape with 3 sides.
17. The corner of an angle or shape.
18. A triangle with a 90 degree angle.