2 years ago

In triangle ABC, what is m and B A. 30° B. 40° C. 75° D. 85°

Mathematics

2 answers:

Kay [80]2 years ago

7 0

Answer:

B B.......B........B......

masha68 [24]2 years ago

6 0

Answer:

B. 40

Step-by-step explanation:

Angle C is linear with ACD, so the 2 angles = 180 degrees. 180 - 155 = 25.

All 3 angles need to add to 180, so 115 + 25 + angle B = 180

140 + angle B = 180, so angle B is 40 degrees.

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