The diagonals of quadrilaterals ABCD intersect
at point N to produce four
congruent segments. What
type of quadrilateral is
ABCD?
a) Rectangle
b) Parallelogram
c) Trapezoid
d) Rhombus

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.

The answer would be a