Two shapes that make a 180 degree angle

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Select a graph that have an equation with a < 0

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?