Reflections

Front

What is a reflection in geometry?

Back

A reflection is when you flip or mirror an object across a line.

Front

State the line of reflection for the point (3, 4) reflected to (3, -4).

Back

Reflection across the x-axis.

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

If a point A(2, 3) is reflected over the y-axis, what are the coordinates of the reflected point?

Back

A'(-2, 3).

Front

If a point B(-5, 7) is reflected over the x-axis, what are the coordinates of the reflected point?

Back

B'(-5, -7).

Front

What is the line of reflection for the point (1, 2) reflected to (1, 5)?

Back

Reflection across the line y = 3.5.

Front

How do you determine the line of reflection between two points?

Back

The line of reflection is the perpendicular bisector of the segment connecting the two points.

Front

What is the effect of reflecting a shape over the x-axis?

Back

The y-coordinates of all points in the shape are inverted.

Front

What is the effect of reflecting a shape over the y-axis?

Back

The x-coordinates of all points in the shape are inverted.