Geometry Regents Prep: Properties of Transformation

Try the following practice question.

Triangle ABC has vertices A (3, 4), B (6, -1), and C (4, 8). If triangle ABC undergoes a dilation centered at the origin with a scale factor of 2, which of the following would not be true?

The perimeter of triangle A'B'C' is twice the perimeter of triangle ABC.

The $m \angle A'$ is double $m \angle A$

The length of $\overline{BC}$ is half the length of $\overline{B'C'}$

The area of triangle A'B'C' is four times as large as the area of triangle ABC

Try the following practice question.

Which of the following transformations or composition of transformations applied to a line segment would not result in an image that is parallel to the original line segment?

Rotation of $180^o$

Rotation of $90^o$

Dilation with a scale factor of 9

Translation down 2 units followed by a dilation with a scale factor of 0.5