brielibri123
brielibri123 brielibri123
  • 12-12-2017
  • Mathematics
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Please help, I don’t know what to do. I need to solve for the measure of angle A

Please help I dont know what to do I need to solve for the measure of angle A class=

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jasontan2709 jasontan2709
  • 12-12-2017
Ok so the 3 angles are 50, x+72, and x+82.
We can find x first;
The angle sum of a triangle is 180 degrees,
So 50 + (x+72) + (x+82) = 180
Simplify the left side to get
2x + 204 = 180
2x = - 24
x = -12.
Angle A is x + 72, so A = -12 + 72
= 60 degrees

So A is 60°
Hope this helped.
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