wesley13
wesley13
06-04-2017
Mathematics
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Number 3 please help
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Sxerks
Sxerks
06-04-2017
You know that D is 9x, because they are vertically opposite angles. The angle sum of a quadrilateral is 360°. Since you're given two right angles, then the other two angles must add up to the remaining 180°.
So, (2x + 105)° + (9x)° = 180° (ie C)
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