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Ckaserer · Answer 1 · 2021-05-15T23:53:20+0000

Answer:

b) ∠4 = m∠U + m∠L

∠4 = 25° + 52°

∠4 = 77°

Explanation:

a) Exterior Angle Theorem. The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of the triangle.

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