Translations and Reflections Review

Front

What is a reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does the coordinate rule (x, y) --> (-x, y) represent?

Back

Reflection over the y-axis.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

When translating a figure to the right, what happens to the x-coordinate?

Back

It increases by a number (x +).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

When translating a figure down, what happens to the y-coordinate?

Back

It decreases by a number (y -).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a translation in geometry?

Back

A transformation that slides a figure from one position to another without changing its shape or size.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the difference between a translation and a reflection?

Back

A translation slides a figure, while a reflection flips it over a line.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the coordinate rule for reflecting over the x-axis?

Back

(x, y) --> (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the coordinate rule for reflecting over the y-axis?

Back

(x, y) --> (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a rotation in geometry?

Back

A transformation that turns a figure around a fixed point.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape.

Tags

CCSS.8.G.A.3