True , because all properties preserved under dilation from triangle ABC to A'B'C'.
What is dilation?
Dilation is the process of increasing the size of an object while maintaining its shape. Depending on the scale factor, the object's size can be increased or decreased.
Given : A triangle ABC is dilated by a factor of 2/3 , result triangle A'B'C'
To find :After dilation, properties of triangle ABC and A'B'C' is true or false.
Dilation of a triangle are result either decrease or increase the corresponding length of triangle , its depends on by which scale factor triangle is dilated ,and dilation does not affect the angle measures of triangle.here scale factor is 2/3 so corresponding sides of triangle A'B'C'' decreases.
So, dilation of triangle are not congruent but similar to the original triangle ABC
Therefore , basic properties of triangle preserved under dilation of triangle by a scale factor.
To know more about dilation follow
https://brainly.com/question/3457976
#SPJ1