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nalin [4]
3 years ago
9

Plz help quick quick quick

Mathematics
1 answer:
Kipish [7]3 years ago
8 0

Step-by-step explanation:

\angle 3 and \angle 16 are alternate exterior angles so they are equal to each other, which means

5x - 30 = 3x + 10 \Rightarrow x = 20

Solving for the measure of \angle 16, we get

m\angle 16 = 5(20) - 30 = 70°

Since \angle 12 and \angle 16 are supplementary,

m\angle 12 = 180° - 70° = 110°

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31.567 * 10^-5

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