Unit 1 Review: Rigid Transformations

Front

What does it mean for two shapes to be CONGRUENT?

Back

Two shapes are congruent if they are exactly the same in shape and size, meaning all corresponding sides and angles are equal.

Front

What is a RIGID transformation?

Back

A rigid transformation is a movement of a shape that preserves its size and shape, meaning all corresponding sides and angles remain congruent.

Front

What are the three types of RIGID transformations?

Back

The three types of rigid transformations are translation, rotation, and reflection.

Front

What is a Translation in geometry?

Back

A translation is a type of rigid transformation that slides a shape from one position to another without changing its size, shape, or orientation.

Front

What is a Reflection in geometry?

Back

A reflection is a type of rigid transformation that flips a shape over a line, creating a mirror image.

Front

What is a Rotation in geometry?

Back

A rotation is a type of rigid transformation that turns a shape around a fixed point at a certain angle.

Front

If point C (1, -4) is reflected over the x-axis, what are the coordinates of C'?

Back

The coordinates of C' are (1, 4).

Front

What happens to the coordinates of a point when it is reflected over the x-axis?

Back

When a point (x, y) is reflected over the x-axis, its coordinates change to (x, -y).

Front

What happens to the coordinates of a point when it is reflected over the y-axis?

Back

When a point (x, y) is reflected over the y-axis, its coordinates change to (-x, y).

Front

What is the result of rotating a shape 90 degrees clockwise around the origin?

Back

The coordinates of a point (x, y) after a 90-degree clockwise rotation around the origin become (y, -x).