5.2 - Reflections

Front

What is a reflection in geometry?

Back

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

Front

What does reflecting a point over the x-axis do to its coordinates?

Back

It changes the sign of the y-coordinate.

Front

What does reflecting a point over the y-axis do to its coordinates?

Back

It changes the sign of the x-coordinate.

Front

If point A is at (2, 3), what are the coordinates of its reflection over the x-axis?

Back

(2, -3)

Front

If point B is at (-4, 5), what are the coordinates of its reflection over the y-axis?

Back

(4, 5)

Front

What is the rule for reflecting a point (x, y) over the x-axis?

Back

(x, y) --> (x, -y)

Front

What is the rule for reflecting a point (x, y) over the y-axis?

Back

(x, y) --> (-x, y)

Front

If triangle ABC is reflected over the y-axis, what happens to the coordinates of point A (3, 2)?

Back

The new coordinates are (-3, 2).

Front

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

Back

The orientation of the shape is reversed.

Front

If a point is reflected over the x-axis and then over the y-axis, what are the new coordinates of point (1, 2)?

Back

(-1, -2)