Question

A triangle whose two angles measure is 30∘ and 120∘ is which triangle

Answer 1

it is a isosceles triangle

Answer 2

The triangle is isosceles.

One angle is 30° and another 120°

So the third should be 180°-(120°+30°)

30°

Since we know that an isosceles triangle has its base angles equal, so the triangle mentioned is isosceles