evilsonic131 evilsonic131

01-02-2017
Mathematics

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What is the measure of angle A in the triangle?

What is the measure of angle A in the triangle class=

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hap092002 hap092002

01-02-2017

The measure of angle A is 50 degrees.
2x-10+x+30+70=180
3x+90=180
-90 -90
3x=90
x=30

2(30)-10
60-10
50

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