a rectangular pyramid was sliced parallel to its base. what is the shape of the cross section shown in the figure?

a triangle that has the same dimensions as one of the sides of the pyramid
a triangle that does not necessarily have the same dimensions as one of the sides of the pyramid
a parallelogram that is not a rectangle
a rectangle

Iwould say they are complementary because that’s the division of a 90 degree angle and it’s split between the middle of them

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.

Use basic math on google