Geometry - Transformations

Front

What is the rule for rotation of 270 degrees?

Back

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

Front

What is the rule for rotation of 90 degrees?

Back

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

Front

If you rotate point A(3, -5) 90° counterclockwise about the origin, what are the coordinates of A'?

Back

(-5, -3)

Front

What is the result of dilating point B(2, 4) by a scale factor of 2?

Back

(4, 8)

Front

A turn is also called a ___________.

Back

Rotation

Front

What is the rule for reflection over the x-axis?

Back

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

Front

What is the rule for reflection over the y-axis?

Back

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

Front

What is the result of translating point C(1, 2) by (3, 4)?

Back

(4, 6)

Front

What is the definition of a transformation in geometry?

Back

A transformation is a change in the position, size, or shape of a figure.

Front

What is the scale factor in dilation?

Back

The scale factor is the ratio of the length of a side of the image to the length of the corresponding side of the original figure.