Drag each tile to the correct box. Not all tiles will be used in experimental studies, we follow a logical method to arrive at a conclusion, Arrange the given steps in the correct sequence.
Make a hypothesis.
Antive at a logical conclusion
Stane the problem
Perform an experiment to
collect data
Ask relevant questions

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.

i would say c is the best answer, hope it's right!

good luck! =)

cutie~