Enlargement or reduction? 8.3C

Front

What is the definition of enlargement in geometry?

Back

Enlargement is a transformation that increases the size of a shape by a scale factor greater than 1.

Front

What is the definition of reduction in geometry?

Back

Reduction is a transformation that decreases the size of a shape by a scale factor less than 1.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, a quantity. In dilation, it determines how much the shape is enlarged or reduced.

Front

If the scale factor is 2, what type of transformation is it?

Back

It is an enlargement.

Front

If the scale factor is 0.5, what type of transformation is it?

Back

It is a reduction.

Front

What is the rule for an enlargement with a scale factor of 3?

Back

The rule is (3x, 3y).

Front

What is the rule for a reduction with a scale factor of 0.25?

Back

The rule is (0.25x, 0.25y).

Front

If a shape is dilated using the rule (1.5x, 1.5y), what type of transformation is this?

Back

This is an enlargement.

Front

If a shape is dilated using the rule (0.8x, 0.8y), what type of transformation is this?

Back

This is a reduction.

Front

What happens to the area of a shape when it is enlarged by a scale factor of k?

Back

The area increases by a factor of k^2.