Unit 11 - Review

Front

What is the rule for the translation of a point (x,y) to (x + 2, y - 1)?

Back

The translation rule is (x,y) → (x + 2, y - 1).

Front

What does a dilation with a scale factor of 1/3 represent?

Back

A dilation with a scale factor of 1/3 is a reduction.

Front

What is the transformation from point C to point D if it involves a 270° clockwise rotation?

Back

The transformation is a 270° clockwise rotation.

Front

How do you find the scale factor when point A (8, 12) is dilated to point A' (2, 3)?

Back

The scale factor is ¼.

Front

If triangle ABC is translated by the rule (x,y) → (x + 3, y - 2), where will point A' be located if A is at (2, 5)?

Back

Point A' will be at (5, 3).

Front

Define translation in geometry.

Back

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

Front

What is the difference between rotation and reflection in transformations?

Back

Rotation turns a figure around a point, while reflection flips a figure over a line.

Front

What is a 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

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

Back

A scale factor greater than 1 enlarges the figure.

Front

What happens to a figure when it is reflected over the x-axis?

Back

The y-coordinates of the points of the figure change sign.