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. .

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).

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step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.