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Sladkaya [172]
3 years ago
14

What is the measure of angle A?

Mathematics
1 answer:
aivan3 [116]3 years ago
3 0
In a quadrilateral the sum of opposite angles is 180°, then:
x+116=180
x=64°
Now substitute x in 2x+40° to find angle A:
2×64+40=168°
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