Transformation Flashcard

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to create a new shape.

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a shape but not its shape, using a scale factor.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a shape during dilation.

Front

How do you find the image of a point after dilation?

Back

To find the image of a point after dilation, multiply the coordinates of the point by the scale factor.

Front

What does it mean to reflect a shape?

Back

To reflect a shape means to flip it over a line, creating a mirror image.

Front

What is the effect of reflecting a point across the y-axis?

Back

Reflecting a point (x, y) across the y-axis results in the point (-x, y).

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a shape around a fixed point, called the center of rotation.

Front

What is the difference between clockwise and counterclockwise rotation?

Back

Clockwise rotation turns in the direction of a clock's hands, while counterclockwise rotation turns in the opposite direction.

Front

What is translation in geometry?

Back

Translation is a transformation that moves a shape from one location to another without changing its size or orientation.

Front

How do you translate a point?

Back

To translate a point, you add a specific value to the x-coordinate and a specific value to the y-coordinate.