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

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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