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grigory [225]
3 years ago
10

Find m+n of this angle.

Mathematics
1 answer:
scoray [572]3 years ago
7 0

Answer:

m + n = 140°

Step-by-step explanation:

∵ The measure of the angle next to n = 40° ⇒ vertically opposite angle with the angle 40°

From parallel lines m , n and angle 40° next to n are interior supplementary means their sum is 180°

∴ m + n + 40° = 180°

∴ m + n = 180 - 40 = 140°

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