Rigid Transformations

Front

What is a rigid transformation?

Back

A transformation that preserves the shape and size of a figure, including translations, rotations, and reflections.

Front

What is a reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is a translation in geometry?

Back

A transformation that slides a figure from one position to another without changing its shape or orientation.

Front

What is a rotation in geometry?

Back

A transformation that turns a figure around a fixed point at a certain angle.

Front

What is a dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape, by expanding or contracting it.

Front

What do we call the new figure after a transformation?

Back

Image.

Front

What do we call the original figure before a transformation?

Back

Pre-image.

Front

If a triangle is translated 3 units right and 2 units up, what are the new coordinates of point (1,1)?

Back

(4,3).

Front

How do you describe the movement of a figure when it is rotated 90 degrees clockwise?

Back

The figure turns around a point, moving each point to a new location based on the angle of rotation.

Front

What is the effect of a reflection over the x-axis on the point (x,y)?

Back

The new point will be (x,-y).