Question

Problem: which description does NOT guarantee that a trapezoid is isosceles?

A) congruent bases
B) congruent legs
C) congruent diagonals
D) both pairs of base angles congruent


I am studying for a test. please help.

Answer 1

A trapezoid is isosceles if and only if

(1) The base angles are congruent

(2) The diagonals are congruent

(3) The opposite angles are supplementary

So the Description is not guarantees that a trapezoid is isoceles for "Congruent bases"

The correct answer is option (A).