Translations and Reflections

Front

What is a reflection in geometry?

Back

A reflection is 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 happens to the coordinates of a point (x, y) when it is reflected across the x-axis?

Back

The coordinates become (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point (x, y) when it is reflected across the y-axis?

Back

The coordinates become (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a translation in geometry?

Back

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does the x-axis represent in a coordinate plane?

Back

The x-axis represents the horizontal line where y=0.

Tags

CCSS.5.G.A.1

Front

What does the y-axis represent in a coordinate plane?

Back

The y-axis represents the vertical line where x=0.

Tags

CCSS.5.G.A.1

Front

If triangle ABC is reflected across the x-axis, what happens to the y-coordinates of its vertices?

Back

The y-coordinates of the vertices are multiplied by -1.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting the point (3, 4) across the y-axis?

Back

The result is (-3, 4).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting the point (-5, -2) across the x-axis?

Back

The result is (-5, 2).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the difference between a reflection and a rotation?

Back

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5