Transformation Unit Flashcard

Front

What is rotational symmetry?

Back

A figure has rotational symmetry if it can be rotated around a central point and still look the same at certain angles.

Front

What is the scale factor in dilation?

Back

The scale factor is the ratio of the length of a side of the image to the length of the corresponding side of the original figure.

Front

If DB = 4.5 and DB prime = 18, what is the scale factor?

Back

4

Front

What transformation is a reflection?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What is the order of transformations in 'reflection then translation'?

Back

First, reflect the figure over a line, then move it to a new position without changing its shape or size.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a figure but not its shape, using a scale factor.

Front

What does a scale factor of 1/2 indicate?

Back

A scale factor of 1/2 indicates a reduction in size, making the figure half as large.

Front

What is the difference between translation and rotation?

Back

Translation moves a figure without changing its orientation, while rotation turns a figure around a point.

Front

What is the effect of a scale factor greater than 1?

Back

A scale factor greater than 1 enlarges the figure.

Front

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

Back

A scale factor less than 1 reduces the size of the figure.