A. Is congruent by ASA (Angle Side Angle)
B. Is congruent by SSS (Side Side Side) because the triangles are reflective.
C. Is congruent by SAS (Side Angle Side)
D. Cannot be determined
2. M<1 = 80
M<6 = 100
3. 2x+7=5x-8
-2x. -2x
7=3x-8
+8. +8
15=3x
3x. 3x
5=x