You can use the SSS, SAS, ASA, AAS congruency for any triangles and the HL congruency for just the right triangle
Answer:
m = -3
Step-by-step explanation:
5m + 20 = 8 + 2m +3
5m + 20 = 11 +2m
3m + 20 = 11
3m = -9
m = -3
The answer is A for this problem
