a + 6 0 + 40 = 180
a = 180 - 100
a = 80 degree
Written on Aug. 28, 2021, 10:26 p.m.
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Lavkush kumar（2nd ka answer ） a + b + c = 180
a + 6 0 + 40 = 180
a = 180 - 100
a = 80 degree
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