Triangle rst was transformed using the rule (x, y) → (–x, –y). the vertices of the triangles are shown.

r (1, 1)
s (3, 1)
t (1, 6) r' (–1, –1)
s' (–3, –1)
t' (–1, –6)
which best describes the transformation?

Find an equation of the line perpendicular to the graph.

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?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?