Answer:
DAB is 117.
Step-by-step explanation:
You can solve 2 ways, either by adding the opposite angles together or by finding the 3rd angle of the triangle and using linear pair.
First Method: 63 + 54 = 117
Second Method:
180 - 63 - 54 = 63 (All triangles = 180)
180 - 63 = 117 (All linear pairs = 180)
