In this figure, a || b | c and m/1 = 50°
What is m/3 ?
O 40°
O 50°
O 130°
O I don't know.

The value of m<3= 130
The correct option is (c)
Given:
m<1= 50
m<1+ m<2= 180 (Linear pair)
m<2= 180-50
m<2=130
Now, m<2 = m<3 [alternate interior angles]
m<3= 130
Hence, the measure of <3 is 130.
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