In the figure given alongside, angle a=angle x and angle b= angle y, show that angle x + angle y + angle z= 180°​

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

What is the frequency of the sinusoidal graph?

Someone me what is the area of this figure? 18m 18m 8m 16m