This diagram shows Parallel Lines
Perpendicular Lines
Supplementary Angles
Complementary Angles

Supplementary angles
Explanation: supplementary angles are angles that add up to 180 degrees and as these two angles are on a straight line and straight lines are always 180 degrees
hope that helps if u have any questions let me know and i would rly appreciate if u could mark this as brainliest !!

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.