Reflection

Front

What is reflection in geometry?

Back

Reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

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

Back

The coordinates become (x, -y).

Front

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

Back

The coordinates become (-x, y).

Front

What is the rule for reflecting a point across the line y = k?

Back

The new coordinates will be (x, 2k - y).

Front

What is the x-axis?

Back

The x-axis is the horizontal line in a coordinate plane where y = 0.

Front

What is the y-axis?

Back

The y-axis is the vertical line in a coordinate plane where x = 0.

Front

If a point (3, 5) is reflected over the x-axis, what are the new coordinates?

Back

(3, -5).

Front

If a point (2, -4) is reflected over the y-axis, what are the new coordinates?

Back

(-2, -4).

Front

What is the result of reflecting a point across the line x = a?

Back

The new coordinates will be (2a - x, y).

Front

What is the significance of the line of reflection?

Back

The line of reflection is the line over which the figure is flipped to create a mirror image.