Question

I have three sides. One of my angle measures 15°. Another has a measure of 60°. What kind of a polygon am I? If I am a triangle, then what kind of triangle am I?

Answer 1

The polygon with three sides is called triangle.

According to the angle sum property of a triangle,

∠A + ∠B + ∠C = 180°

∠A + 15° + 60° = 180°

∠A = 180° - 5°

∠A = 105°

As one angle in this triangle is greater than 90°, so it is an obtuse angled triangle.