The sum of angles in a triangle is equal to 180°
3n+n+50+2n-20= 180
6n+30=180
6n = 150
n = 25°
The angles of the triangle are 75°, 55° and 30°
The smallest angle is 30°
The answer is D
Dana05 answered the question on October 15, 2019 at 14:25
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