Unit 9 Review - Transformations

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape, called the image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the four main types of transformations?

Back

The four main types of transformations are translation, rotation, reflection, and dilation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Define translation in geometry.

Back

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a rotation in geometry?

Back

Rotation is a transformation that turns a shape around a fixed point, called the center of rotation, by a certain angle.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Explain reflection in geometry.

Back

Reflection is a transformation that flips a shape over a line, creating a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a shape by a scale factor, either enlarging or reducing it.

Tags

CCSS.8.G.A.3

Front

How do you perform a dilation on a point?

Back

To perform a dilation on a point, multiply the coordinates of the point by the scale factor.

Tags

CCSS.8.G.A.3

Front

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

Back

A scale factor greater than 1 enlarges the shape.

Tags

CCSS.8.G.A.3

Front

What is the effect of a scale factor between 0 and 1 in dilation?

Back

A scale factor between 0 and 1 reduces the shape.

Tags

CCSS.8.G.A.3

Front

How do you translate a point (x, y) by (a, b)?

Back

To translate a point (x, y) by (a, b), add a to x and b to y, resulting in the new point (x + a, y + b).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5