What is the name of this prism? A. trapezoidal prism
B. pentagonal prism
C. sphere
D. hexagonal prism

it's Pentagonal prism Hood it helps Mark me as brainliest :DD

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.

215.92 dollars is the answer