M8 Translation and Reflection Flashcard

Front

What is translation in geometry?

Back

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you translate a shape 5 units to the right and 2 units down?

Back

Add 5 to the x-coordinates and subtract 2 from the y-coordinates of each point of the shape.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is 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

How do you reflect a point over the y-axis?

Back

Change the sign of the x-coordinate while keeping the y-coordinate the same.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting the point (3, 2) over the y-axis?

Back

The reflected point is (-3, 2).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point when it is reflected over the x-axis?

Back

The y-coordinate changes sign while the x-coordinate remains the same.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect the point (1, -4) over the x-axis. What is the new point?

Back

The new point is (1, 4).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the rule for reflecting a point (x, y) over the y-axis?

Back

The rule is (x, y) -> (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the rule for reflecting a point (x, y) over the x-axis?

Back

The rule is (x, y) -> (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If point Y is at (-5, -7), what is its reflection over the y-axis?

Back

The reflection is at (5, -7).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5