Coordinate geometry practice

Front

What are the coordinates of a point after a 180° rotation about the origin?

Back

The coordinates (x, y) become (-x, -y).

Front

What are the coordinates of a point after a 90° counterclockwise rotation about the origin?

Back

The coordinates (x, y) become (-y, x).

Front

What is a rigid motion in geometry?

Back

A transformation that preserves distance and angle measures, such as rotation, reflection, and translation.

Front

What is the result of reflecting a point (x, y) over the x-axis?

Back

The new coordinates are (x, -y).

Front

What is the result of reflecting a point (x, y) over the y-axis?

Back

The new coordinates are (-x, y).

Front

What is the result of a 90° clockwise rotation of point W(-6, 7)?

Back

The new coordinates are (7, 6).

Front

What is the result of a 90° counterclockwise rotation of point A(-5, 3)?

Back

The new coordinates are (3, 5).

Front

What is the difference between rigid motion and dilation?

Back

Rigid motion preserves shape and size, while dilation changes the size but not the shape.

Front

What is the composition of transformations?

Back

Applying two or more transformations in sequence to a figure.

Front

What is the effect of a translation on a point (x, y)?

Back

The new coordinates are (x + a, y + b), where (a, b) is the translation vector.