Question

triangle proofs quick check
fill in the blank to make a true statement.
the_________of an isosceles triangle are congruent.
(1 point)
base angles
bases
three sides

Explanation:

An isosceles triangle has two equal sides called legs and one unequal side called the base. The angles opposite the equal sides (the base angles) are congruent. Bases: an isosceles triangle has only one base. Three sides: only an equilateral triangle has all three sides congruent.

Answer:

base angles