Question

An isosceles triangle has an angle that measures 80°. Which other angles could be in that isosceles triangle? Choose all that apply

Answer 1

Two different possible answers

Answer 2

There are two other angles that could be present in the isosceles triangle.

The first angle is 80.

The second angle is 20.

We know this because all three angles in a triangle add up to 180 degrees.

An isosceles triangle has two sides that are the same length, and thus there are two equal angles.

80 + 80 = 160

180 - 160 = 20

Because of this, we know the measure of all three angles.