Mrsir2374 Mrsir2374

26-09-2017
Mathematics

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The second angle of a triangle is three times as large as the first. the third angle is 20 degrees less than the sum of the other two angles. find the measure of the first angle.

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jamesmacnab3owy6vd jamesmacnab3owy6vd

27-09-2017

The first angle is 25 degrees
25+75=100
100-20=80
100+80=180

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