1. Two angles of a triangle are \small 30^{\circ} and \small 80^{\circ}. Find the third angle. 

Answers (1)

Let the third angle be x

Now,  As we know the sum of internal angles of a triangle is 180. so,

30^0+80^0+x=180^0

x=180^0-30^0-80^0

x=70^0

Hence the Third angle is 70^0.

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