Transformations Test Review

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape.

Front

What are the four main types of transformations?

Back

The four main types of transformations are translation, rotation, reflection, and dilation.

Front

What does dilation mean in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape.

Front

What is the scale factor in a dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.

Front

If a figure is dilated by a scale factor of 2, what happens to its coordinates?

Back

The coordinates of the figure change from (x, y) to (2x, 2y).

Front

What is the effect of a scale factor less than 1 in dilation?

Back

A scale factor less than 1 results in a reduction of the figure's size.

Front

What is the formula for calculating the scale factor?

Back

Front

What does it mean for figures to be similar?

Back

Similar figures have the same shape but may have different sizes.

Front

What does it mean for figures to be congruent?

Back

Congruent figures are identical in shape and size.

Front

When a dilation has a scale factor greater than one, what type of transformation occurs?

Back

An enlargement occurs when the scale factor is greater than one.