Mathematics
klmolinelli
2016-04-19 12:27:42
What is the measure of the missing angle? 81° 84° 87° 90°
ANSWERS
vanyaseelam
2016-04-19 17:48:40

In a quadrilateral, all 4 of the angles must add up to 360.  360 - 107 - 72 - 91 = x 253 - 72 - 91 = x 181-91 = x 90

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