Question

a triangle, △abc, has angle measures of 40°, 40°, and 100° and exactly two congruent (equal) sides. how would this triangle be classified? isosceles acute equilateral obtuse scalene obtuse isosceles obtuse

Explanation:

An isosceles triangle has two congruent sides. An obtuse - angled triangle has one angle greater than 90°. Since the triangle has two equal sides and an angle of 100° (which is greater than 90°), it is an isosceles obtuse triangle.

Answer:

Isosceles obtuse