Question

If the measure of angle 1 is 57°, find the measures of angle 6

Answer 1

∠6 = 123°

Explanation:

∠1 = ∠4 because they are vertically opposite angles and vertically opposite angles are equal.

∠4 + ∠6 = 180 (same side interior angles are equal)

∠6 = 180 - 57

∠6 = 123°

Answer 2

123

Explanation:

180 - 57 = 123

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