A right rectangular pyramid is sliced horizontally (across) at the red line, by a plane parallel to the base. What is the shape of the cross-section? O A. Rectangle

OB. Triangle

C. Trapezoid

D. Pyramid ​

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

answer: i believe the answer is e

step-by-step explanation: