Due tomorrow 4/19/2012

This is a 5th grade homework.

The measures of three angles of a quadrilateral are given.Find the measure of the fourth angle.  

1. 65,150,89=___

2.100,80,100=___

3.82,78,90=___

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1 Answer

1) fourth angle = 360 - 65 - 150 - 89 = 56 degrees

2) fourth angle = 360 - 100 - 80 - 100 = 80 degrees

3) fourth angle = 360 - 82 - 78 - 90 = 110 degrees
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