Question

State, if the triangles are possible with the following angles.

${20}^{\circ }$, ${70}^{\circ }$ and ${90}^{\circ }$

Answer 1

Step: Check whether triangle is possible

We know that sum of three angles of a triangle must be 180^o.

Here, the sum of the given three angles is

${20}^{\circ }$+${70}^{\circ }$+${90}^{\circ }$=${180}^{\circ }$

Since the sum of three angles of a triangle is 180^o, the triangle is possible.