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A heptagon has angles measure of 105°, 141°, 132°, 109°, 143° and 131°. What is the measure of the seventh angle?
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A heptagon has angles measure of 105°, 141°, 132°, 109°, 143° and 131°. What is the measure of the seventh angle?

User Aruni Godage
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1 Answer

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Answer : 139

The interior angle sum of a heptagon adds upto 900

So add all those angles and subtract their sum from 900

The answer will be 139

Hope this helps
User Will Charlton
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