20-09-2017
Mathematics

contestada

A quadrilateral has angles that measure 68°, 81°, and 90°. What is the measure of the fourth angle?

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April135 April135

20-09-2017

The sum of the angles of a quadrilateral is equal to 360 degrees so to find the measure of the fourth angle, u just have to minus 360 with all the other angles so here we go

360-68-81-90
=121

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