How to find the surface area of a triangle without the height?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?