Unit 2: Transformation VOCAB FLASHCARD

Front

What is a scale factor in transformations?

Back

A scale factor is a number that scales, or multiplies, a quantity. In transformations, it determines how much a figure is enlarged or reduced.

Front

How do you determine the scale factor between two similar figures?

Back

To find the scale factor, divide the length of a side of the image by the length of the corresponding side of the pre-image.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they are in the same plane and do not intersect, no matter how far they are extended.

Front

What is a pre-image in transformations?

Back

A pre-image is the original figure before any transformation has been applied.

Front

What is the difference between a transformation and a rigid transformation?

Back

A transformation changes the position, size, or shape of a figure, while a rigid transformation preserves the shape and size.

Front

What are the types of transformations?

Back

The main types of transformations are translations, rotations, reflections, and dilations.

Front

What is a translation in geometry?

Back

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

Front

What is a rotation in geometry?

Back

A rotation turns a figure around a fixed point called the center of rotation.

Front

What is a reflection in geometry?

Back

A reflection flips a figure over a line, creating a mirror image.

Front

What is a dilation in geometry?

Back

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