Question 2 of 10
2 points
in the diagram below, ab is parallel to cd. what is the value of x?

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.

it's

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.