Translations & Reflections

Front

What is a translation in geometry?

Back

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

Front

What does it mean to reflect a shape across the x-axis?

Back

Reflecting a shape across the x-axis means flipping it over the x-axis, changing the sign of the y-coordinates of each point.

Front

How do you translate a shape to the right?

Back

To translate a shape to the right, you add a positive number to the x-coordinates of each point.

Front

What is the result of reflecting a shape across the y-axis?

Back

Reflecting a shape across the y-axis changes the sign of the x-coordinates of each point.

Front

What is the difference between a translation and a reflection?

Back

A translation moves a shape without changing its orientation, while a reflection flips a shape over a line, changing its orientation.

Front

What does it mean to translate a shape down?

Back

To translate a shape down, you subtract a positive number from the y-coordinates of each point.

Front

What is a 90° clockwise rotation?

Back

A 90° clockwise rotation turns a shape 90 degrees to the right around a fixed point.

Front

What is a 90° counterclockwise rotation?

Back

A 90° counterclockwise rotation turns a shape 90 degrees to the left around a fixed point.

Front

What is the effect of a reflection across the y-axis on the coordinates (x, y)?

Back

The coordinates become (-x, y) after a reflection across the y-axis.

Front

What is the effect of a reflection across the x-axis on the coordinates (x, y)?

Back

The coordinates become (x, -y) after a reflection across the x-axis.