Unit 2: Triangles

4. If the congruent side is between the congruent angles, we call this what theorem?
5. Triangle congruence theorem with 3 pairs of congruent sides. (Hint: abbreviation)
7. The sum of the lengths of the 2 shortest sides of a triangle must be _________ than the third side.
8. The ____ of the angle measures of a triangle is 180°.
10. In a triangle, the largest angle is ______ from the longest side.
12. The angle between the congruent sides and opposite base on an isosceles triangle.
13. For the SAS congruence theorem, the angle must be __________ the congruent sides.
16. △BER and △HUG are congruent. If ⦣B is 42°, what other angle is 42°?
17. We create this when we set two expressions equal, such as sides of an isosceles triangle.
19. When given three angles, the equation always equals this number. (spell the #)

1. We label this triangle part with curves. A location where two sides meet.
2. A way to name congruent triangles based on corresponding parts is called a triangle __________ theorem.
3. If △BMX is congruent to △RAD, which side would be congruent to side RD.
6. We label this triangle part with tick marks to show congruence.
9. Two sides of an isosceles triangle must be ______.
11. Each angle in an equilateral triangle is ______ degrees. (spell the #)
14. This is always true about the measures of base angles in an isosceles triangle. They are ______.
15. Non-congruent side opposite from the vertex in an isosceles triangle.
18. For the AAS theorem, the corresponding side must ___ be between the congruent angles.