Transformations Review

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

Front

Write the rule for translating a point 3 units up and 2 units to the right.

Back

(x, y) → (x + 2, y + 3)

Front

What is a scale factor in dilation?

Back

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

Front

If a point (8, 12) is dilated to (2, 3), what is the scale factor?

Back

1/4

Front

How do you determine the new coordinates after a translation?

Back

Add the translation values to the original coordinates.

Front

Translate the point (2, -5) 3 units to the right and 6 units up. What are the new coordinates?

Back

(5, 1)

Front

What does it mean to rotate a figure?

Back

To rotate a figure means to turn it around a fixed point, called the center of rotation.

Front

How many degrees is a 180-degree rotation?

Back

A 180-degree rotation turns a figure halfway around the center of rotation.

Front

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

Back

It enlarges the figure.

Front

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

Back

It reduces the figure.