Question: are diagonals of an isosceles trapezoid congruent?
Answer: Both parallel sides are called bases. Recall that in an isosceles triangle, the two base angles are congruent. ... The diagonals of an isosceles trapezoid are also congruent, but they do NOT bisect each other. Isosceles Trapezoid Diagonals Theorem: The diagonals of an isosceles trapezoid are congruent.