Question

The coordinates of the vertices of ΔXYZ are (4, –1), (2, –4), and (7, –4).
The coordinates of image ΔXʹYʹZʹ are (−4, −1), (−2, −4), and (−7, −4).
This transformation can be expressed as (x, y) ⟶ (−x, y).


Is ΔXYZ congruent to ΔXʹYʹZʹ?

Why or why not?

Answer 1

They are congruent because all sides are equal

Answer 2

it's symmetry