Which characteristics will prove that def is a right, isosceles triangle

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

im not quite sure if this is right but i got 5.6 oisutuve

step-by-step explanation:

c

step-by-step explanation: easy math