Rewrite the definition “linear angles are supplementary” in biconditional form the angles are linear angles if and only if they are supplementary. if the angles are linear angles only if they are supplementary. if the angles are linear angles, then they are supplementary. if and only if the angles are linear angles, if and only if they are supplementary.

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.

-4

step-by-step explanation:

correct answer was 0.5