Question

ΔABC was dilated from the origin by a scale factor of 2 to create ΔA′B′C′. Which statement explains why the triangles are similar?

Dilations preserve side length; therefore, the corresponding sides of ΔABC and ΔA′B′C′ are congruent.
Dilations preserve betweenness of points; therefore, the corresponding sides of ΔABC and ΔA′B′C′ are congruent.
Dilations preserve orientation; therefore, the corresponding angles of ΔABC and ΔA′B′C′ are congruent.
Dilations preserve angle measure; therefore the corresponding angles of ΔABC and ΔA′B′C′ are congruent.

Answer 1

@dontsaymyname

Answer 2

so a dilatation by a scale factor of 2 what mean ?

- the measures of the origin triangle was doubled

Answer 3

Im very confused on what any of this means, honestly I need a geometry lesson lol