Q

Two angles of a triangle are 30 degrees and 80 degrees. Find the third angle.

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

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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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