Write a list of steps that are needed to find the measure of ∠B.
A line segment ACD is shown with triangle ABC drawn so that AC is the base of the triangle. Angle BAC is labeled with 72 degree sign, and angle BCD is labeled with 113 degree sign.
BCA + BCD = 180, so BCA = 67
Now, 72+B+67 = 180
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dont copy completely pls..
first i do bca+bcd which would equal to 180. so, bca=67
next, 72+67=139, 180-139=41
the measure of b is 41 degrees