Question 217916: Two angles of a triangle have the same measure and the third angle is 1/4 the size of each of the other two. Find the measure of each angle.
ps....i know the answer is 80. Question is, how do I work it?
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! Let x = common angle,,,,,smaller angle = x/4
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Remember that the sum of the interior angles of a triangle = 180
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x+x+x/4 =180
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2.25x = 180
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x=80
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angles of triangle are,,,,,80,,,80,,,20
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check,,, sum to 180,,,,ok
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