Transformations Review 8th grade

Front

What is a transformation in geometry?

Back

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

Front

What are the four main types of transformations?

Back

The four main types of transformations are translation, rotation, reflection, and dilation.

Front

Define rotation in geometry.

Back

Rotation is a transformation that turns a figure around a fixed point, called the center of rotation.

Front

What does a 180° rotation look like?

Back

A 180° rotation flips the figure to the opposite side of the center of rotation.

Front

How do you perform a 90° clockwise rotation on a point (x, y)?

Back

The rule is (x, y) → (y, -x).

Front

How do you perform a 270° counterclockwise rotation on a point (x, y)?

Back

The rule is (x, y) → (-y, x).

Front

What is a reflection in geometry?

Back

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

Front

How do you find the reflection of a point (x, y) across the x-axis?

Back

The reflection is (x, -y).

Front

What is the result of reflecting the point (3, 4) across the x-axis?

Back

The result is (3, -4).

Front

What is the result of reflecting the point (2, -5) across the y-axis?

Back

The result is (-2, -5).