Time is a great teacher can any please explain it

Step-by-step explanation:

Teaching is hard work and some teachers never grow to be anything better than mediocre. They do the bare minimum required and very little more. The great teachers, however, work tirelessly to create a challenging, nurturing environment for their students. Great teaching seems to have less to do with our knowledge and skills than with our attitude toward our students, our subject, and our work. Although this list is certainly not all-inclusive, I have narrowed down the many characteristics of a great teacher to those I have found to be the most essential, regardless of the age of the learner:

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.