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 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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