## Detailed description

Cartesian plane shown with two triangles ABC and $$A^\prime B^\prime C^\prime$$. Dashed lines joining A to the origin and then the origin to $$A^\prime$$.

Coordinates:

A(1, 2); B(4, 3); C(5, 1)

$$A^\prime$$(1, –2); $$B^\prime$$(4, –3); $$C^\prime$$(5, –1)