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FL-1206310-v05-Geometry
Unit Test
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What is always true about the angles of an isosceles triangle?
All three angles are congruent.
At least two of the angles are congruent.
The vertex angle is a right angle.
The vertex angle is obtuse.
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Answer 1

At least two of the angles in an isosceles triangle are congruent.

Step-by-step explanation:

An isosceles triangle is a triangle that has two sides of equal length. Since a triangle's angles always add up to 180 degrees, and two sides of an isosceles triangle are equal, it follows that the angles opposite these sides are also equal. Therefore, at least two of the angles in an isosceles triangle are congruent.

Learn more about Triangle angles