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this question is about finding the measure of angle ECF

This Question Is About Finding The Measure Of Angle ECF class=

Sagot :

Since the angle CAD is 120°, the angle CAB is 180° - 120° = 60°

Therefore, the angle ACB = 180° - 90° - 60° = 30°

This angle is equal to the angle ECF.

Answer: ECF = 30°

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