Transformations Review

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure, either enlarging or reducing it, while maintaining its shape.

Front

What happens to the coordinates of a point when it is rotated 90 degrees clockwise around the origin?

Back

The coordinates (x, y) become (y, -x) after a 90-degree clockwise rotation.

Front

What is the scale factor in a dilation?

Back

The scale factor is the ratio of the size of the image to the size of the original figure.

Front

If a point is translated left 5 units, what is the change in its x-coordinate?

Back

The x-coordinate decreases by 5.

Front

What is the result of dilating the point (8, 12) by a scale factor of ¼?

Back

The new point is (2, 3).

Front

What is the effect of a translation on a geometric figure?

Back

A translation moves every point of a figure the same distance in the same direction.

Front

How do you determine the direction of a translation?

Back

The direction of a translation is determined by the changes in the x and y coordinates.

Front

What is the image of the point (-5, 8) after a 90-degree clockwise rotation?

Back

The image is (8, 5).

Front

What does it mean for a transformation to be rigid?

Back

A rigid transformation preserves the shape and size of a figure.

Front

What are the four types of transformations in geometry?

Back

The four types are translations, rotations, reflections, and dilations.