1. name the property used in each step
ab(a+b) = (ab)a + (ab)b
= a(ab) +(ab)b
=(a * a)b + a(b* b)
= a b + ab?

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.

step-by-step explanation:

x=half

step-by-step explanation:

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