Question

Two angles of a trangle are 30 degree and 80 degree. Find the third angle.

Answer 1

Given

Angle 1 = 30° ; Angle 2 = 80°

To find : Third angle = ?

We know that,

Angle sum property of a triangle states that, if we sum up all the interior angles of a triangle, we get 180° as the sum.

=> 30° + 80° + Angle 3 = 180°

=> 110° + Angle 3 = 180°

=> Angle 3 = 180° - 110°

=> Angle 3 = 70°

Hence the measure of third angle is 70°.

Answer 2

Bonjour !!!❤❤

One angle = 30°

Second angle = 80°

We know,

Sum of all angles of a triangle is 180°

Let the unknown angle be x

30 + 80 + x = 180

=> 110 + x = 180

=> x = 180 - 110

=> x = 70°

Hope it helps....✌✌