Question

which of the following cases is a triangle possible with the given group of angles? A) 90° 60°30° B) 80° 70° 40°

Answer 1

A) 90° 60°30°
This is the cases of a triangle possible with the given group of angles

As, 90° + 60° + 30° = 180°

Sum of all angles in a triangle = 180°

Answer 2

We know that,
Sum of angles in a triangle = 180°.

So checking the sum of angles.

A) 90° +60°+30°=180
Hence, it is a triangle.

B) 80° +70° +40°= 190°

Hence it is not a triangle

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Therefore, Option A is a possible triangle