I need the help to this answer very badly!

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.

ii6tyhj7 juj3yyj333ju jmyhthhtk7h jg hajj jiijh

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong