Reflections, Translations, and Rotations Review

Front

What is the result of rotating a point (x, y) 180° about the origin?

Back

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

Front

What is the term for the original figure before a transformation?

Back

Pre-image.

Front

What transformation occurs when the coordinates change from (x, y) to (x + 2, y - 3)?

Back

Slide right 2, down 3.

Front

If triangle A is rotated 90° counterclockwise about the origin, what is the new position of point (x, y)?

Back

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

Front

If you translate point T(2, -5) 3 units to the right and 6 units up, what are the new coordinates?

Back

(5, 1).

Front

What is a reflection in geometry?

Back

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

Front

What is the effect of a translation on a figure?

Back

It moves the figure from one location to another without changing its shape or orientation.

Front

What is the center of rotation?

Back

The fixed point around which a figure rotates.

Front

How do you determine the image of a point after a reflection over the x-axis?

Back

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

Front

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

Back

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