7GTH Module 1 Topic 2/3 RETAKE

Front

What is the measure of the angle if it is indicated as 45 degrees?

Back

The measure of the indicated angle is 45 degrees.

Front

How do you write the algebraic notation for a scale factor of 3?

Back

(x, y) goes to (3x, 3y) is the algebraic notation for a scale factor of 3.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure, either enlarging or reducing it.

Front

True or False: Dilations maintain congruence.

Back

False. Dilations do not maintain congruence; they change the size of the figure.

Front

Dilate Point B (3, 2) by a scale factor of 1/2. What is the new point?

Back

The new point after dilation is (1.5, 1).

Front

What is the definition of a scale factor in dilations?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure during a dilation.

Front

If a figure is dilated by a scale factor of 1/3, how are the coordinates transformed?

Back

The coordinates (x, y) are transformed to (1/3x, 1/3y).

Front

What happens to the area of a figure when it is dilated by a scale factor of 2?

Back

The area of the figure is multiplied by 4 (2 squared) when dilated by a scale factor of 2.

Front

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

Back

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

Front

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

Back

A scale factor greater than 1 results in an enlargement of the figure's size.