Illustrative Grade 8 Unit 1

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 are the four main types of transformations?

Back

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

Front

Define translation in geometry.

Back

Translation is a transformation that slides a shape from one position to another without turning it.

Front

What is a rotation in geometry?

Back

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

Front

What does reflection mean in geometry?

Back

Reflection is a transformation that flips a shape over a line, creating a mirror image.

Front

What is the difference between clockwise and counterclockwise rotation?

Back

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

Front

How do you describe a translation of a shape?

Back

A translation is described by how far to move the shape horizontally and vertically, such as 'right 4, up 2'.

Front

What is the transformation rule for moving a shape 5 units to the right and 1 unit up?

Back

The transformation rule is 'right 5, up 1'.

Front

What is the term for a transformation that does not change the size or shape of a figure?

Back

An isometry is a transformation that preserves the size and shape of a figure.

Front

What is the result of a 90-degree clockwise rotation of a point (x, y)?

Back

The result is the point (y, -x).