Question

In the following figure, the measure of /_A is
60°
40
B
С
(a) 70°
(b) 90°
(C) 80°
(d) 100°
O
a
b
Od​

Answer 1

80°

Step-by-step explanation:

60°+40°=180°

100°-180°=80°

your answer is (c) 80°

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