Question

The angles in a triangle are 100, 40, and 40 degrees. Classify the triangle by its angles and sides.

A. Right isosceles
B. Right Scalene
C. Obtuse scalene
D. Acute isosceles
E. Acute scalene
F. Obtuse isosceles

Answer 1

F. Obtuse isosceles

Explanation:

Since we have an angle that is 100 degrees, we have an obtuse angle

We have two angles that are 40, which means we have two sides that are equal length, because two angles have the same measure. That means it is isosceles

The triangle is an obtuse isosceles