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Given that angle E C A and angle E C D are supplementary, what is the measure of angle E C D?
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Given that angle E C A and angle E C D are supplementary, what is the measure of angle E C D?

User Tom Shanley
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1 Answer

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If angles ECA and ECD are supplementary, then

angle ECD = (180 degrees) minus (angle ECA) .


User Stemkoski
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