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Find the measure of each angle indicated

A) 21°
C) 23°
E) 25°
B) 80°
D) 20°

Find The Measure Of Each Angle Indicated A 21 C 23 E 25 B 80 D 20 class=

Answer :

Answer:

D

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ ADE is an exterior angle of the triangle , then

80° + ? = 100° ( subtract 80° from both sides )

? = 20° → D

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