Rotation and Reflection Concepts

Lesson four covers transformations in a coordinate plane, focusing on translation, rotation, and reflection. It explains how to perform these transformations, including creating prisms through translation, finding the center of rotation, and verifying rotations. The lesson also covers reflections using perpendicular lines and mirrors.

What is the result of translating a polygon in a grid?

• A new polygon

• A line

• A prism

• A circle

What happens when you connect the corresponding sides of two translated polygons?

• You get a new polygon

• You create a prism

• You form a circle

• You form a line

What is the first step in performing a rotation?

• Finding the midpoint

• Identifying the center of rotation

• Drawing a line

• Counting units

How do you find the center of rotation?

• By using a compass

• By drawing parallel lines

• By connecting corresponding points and drawing perpendicular lines

• By measuring angles

What is the significance of drawing a perpendicular line from the midpoint?

• It creates a new shape

• It divides the shape into two

• It identifies the center of rotation

• It helps in measuring angles

What is the purpose of counting units along the axis during rotation?

• To draw a line

• To find the midpoint

• To verify the rotation

• To measure the distance

How do you ensure that a rotation is performed correctly?

• By using a ruler

• By measuring the angles

• By counting units along the axis and in the direction of rotation

• By drawing circles

What is the final step in verifying a rotation?

• Drawing a new shape

• Counting units in the direction of rotation

• Measuring the angles

• Using a compass

What is the line of reflection compared to?

• A mirror

• A wall

• A door

• A window

What is the role of perpendicular lines in reflection?

• They divide the shape

• They form a new shape

• They help in measuring distance

• They ensure the reflection is accurate