Question

Kenneth graphed the triangle A'B'C' by dilating triangle ABC. Which of the following must be true?

A The ratio of corresponding sides of ABC of A'B'C' are equal.
B The area of A'B'C' is greater than the area of ABC.
C Triangle ABC is congruent to triangle A'B'C'.
D Triangle ABC is a isosceles triangle.

Answer 1

When a given object has been dilated, the image and pre-image are always similar, this implies that the corresponding angles are equal, the ratio of corresponding sides are the same. Thus given that ABC was dilated to form A'B'C', the true statement will be:
A] The ratio of corresponding sides of ABC of A'B'C' are equal.