Reflections

Front

What is a reflection?

Back

When you flip or mirror an object across a line.

Front

Reflect triangle ABC over the x-axis. What are the coordinates of point B'?

Back

(0, -4)

Front

If you reflect the point D (5, -1) over the origin, what are the coordinates of the image?

Back

D' (-5, 1)

Front

What is the line of reflection?

Back

The line across which a shape is flipped to create a mirror image.

Front

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

Back

Change the sign of the x-coordinate.

Front

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

Back

The new coordinates are (x, -y).

Front

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

Back

(-3, 4)

Front

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

Back

(-2, -5)

Front

What is the effect of reflecting a shape over a vertical line?

Back

The shape will appear as if it has been flipped horizontally.

Front

What is the effect of reflecting a shape over a horizontal line?

Back

The shape will appear as if it has been flipped vertically.