jennn03 jennn03
  • 03-02-2017
  • Mathematics
contestada

if two angles of a triangle have measures of 20 and 40 degrees, what is the measure of the third.

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ryanwolski5 ryanwolski5
  • 03-02-2017
The sum of all angles in a triangle is 180.

AngleA+AngleB+AngleC=180
20+40+AngleC=180
AngleC=120
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BraedenG
BraedenG BraedenG
  • 03-02-2017
All 3 angles must add up to 180. So 40 + 20 = 60. Subtract that from 180 and you get 120. There is your answer
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