Quarterly Review

Front

90° counterclockwise rotation

Back

A 90° counterclockwise rotation about the origin changes (x, y) to (-y, x).

Front

The measure of angle 2

Back

The measure of angle 2 is 104.5°.

Front

A rectangle with a perimeter of 19 centimeters is translated and rotated in the coordinate plane. What is the perimeter of the resulting image?.

Back

19cm

Front

What is the definition of a translation?

Back

A transformation which is a "slide"

Move each point same distance same direction

Front

Effect of translation on perimeter.

Back

Translation does not change the perimeter of a figure.

Front

Scale factor in dilation.

Back

The ratio of any two corresponding lengths in two similar geometric figures.

Front

Alternate interior angles.

Back

Angles that are on opposite sides of the transversal and inside the two lines.

Front

Transversal line.

Back

A line that passes through two lines in the same plane at two distinct points.

Front

Definition of a scale factor less than 1.

Back

A reduction in size of the original figure.

Front

Effect of dilation on coordinates.

Back

Each coordinate is multiplied by the scale factor.