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OpenStudy (anonymous):
The sum of the measures of the angles in a quadrilateral is (blank) degrees??
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OpenStudy (ash2326):
A square is also a quadrilateral. Do you know the angles of a square?
OpenStudy (primeralph):
eerrrr, I can't really say the answer, but it's twice the sum of angles in a triangle.
OpenStudy (ash2326):
@hayley_baby19 Can you try?
OpenStudy (reemii):
what ash2326 said is the way to go. since all quadrilateral verify the claim, you can choose one type of quadr. for which this sum is easy to compute: |dw:1370029319965:dw| find "a", multiply by 4, and you get that number you're looking for.
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