IM 8th Math Unit 1 Mid-Unit Assessment Review

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 types of transformations?

Back

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

Front

Define translation in geometry.

Back

Translation is a transformation that moves every point of a shape the same distance in the same direction.

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a shape around a fixed point, called the center of rotation, by 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 a rigid transformation?

Back

A rigid transformation is a transformation that preserves the shape and size of a figure, meaning the distances and angles remain unchanged.

Front

What is the angle of rotation for a 180° rotation?

Back

A 180° rotation turns a shape halfway around a circle, resulting in a shape that is upside down.

Front

How do you determine the angle of rotation?

Back

The angle of rotation is determined by how far a shape is turned around a center point, measured in degrees.

Front

What happens to the angles of a shape during a rigid transformation?

Back

The measures of the angles remain the same during a rigid transformation.

Front

What is the result of reflecting a shape over the x-axis?

Back

When a shape is reflected over the x-axis, the y-coordinates of its points change sign, while the x-coordinates remain the same.