Geometry Reflections

Front

What is a reflection in geometry?

Back

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

Front

Does a reflection represent a rigid motion?

Back

Yes, a reflection is a rigid motion because it preserves the shape and size of the figure.

Front

What is the line of reflection?

Back

The line of reflection is the line over which a figure is reflected, creating a mirror image.

Front

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

Back

The coordinates become (x, -y).

Front

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

Back

The coordinates become (-x, y).

Front

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

Back

The result is (3, -4).

Front

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

Back

The result is (2, 5).

Front

Identify the transformation: (x, y) --> (-x, y).

Back

This transformation is a reflection over the y-axis.

Front

Identify the transformation: (x, y) --> (x, -y).

Back

This transformation is a reflection over the x-axis.

Front

What is the reflection of the point (1, 2) across the line y = 1?

Back

The reflection is (1, 0).