NikitaShadurski NikitaShadurski

11-03-2017
Mathematics

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What is the measures of angle ECD? Please show work.

What is the measures of angle ECD Please show work class=

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Аноним Аноним

11-03-2017

The anser is 40

the resense is verticle angle are congrounent.

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dumbunny dumbunny

12-03-2017

The answer is D. 80°. Angle B is 60 because the angle is adjacent. That makes 60 the vertical angle for the second angle in the triangle with the 40. Since we know two of the angles, we add them together to get 100. 180-100 is 80°

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