Translations and Reflections

Front

What is a reflection in geometry?

Back

A reflection in geometry is a transformation that flips a figure over a line called the line of reflection.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

True or False: A reflection is a transformation that flips a figure over a line.

Back

True

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does a translation do to a figure on the coordinate plane?

Back

A translation slides the figure to a different position without changing its shape or orientation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the coordinates of a point after a reflection over the y-axis?

Back

The coordinates of a point after a reflection over the y-axis are (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the line of reflection?

Back

The line of reflection is the line over which a figure is flipped during a reflection transformation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the difference between a reflection and a translation?

Back

A reflection flips a figure over a line, while a translation slides it to a new position without altering its orientation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How does a reflection over the x-axis affect the coordinates of a point (x, y)?

Back

A reflection over the x-axis changes the coordinates to (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of a translation on the coordinates of a point (x, y) when it is translated by (a, b)?

Back

The new coordinates after translation will be (x + a, y + b).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Can a reflection change the size of a figure?

Back

No, a reflection does not change the size of a figure; it only changes its position and orientation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the geometric term for moving a figure without rotating or flipping it?

Back

The geometric term for moving a figure without rotating or flipping it is called a translation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5