Lines, Angles, and Shapes

Geometry is all about the shapes and spaces around you. You’ll learn to identify and describe lines, angles, polygons, and circles.

• Line: Goes on forever in both directions.
• Ray: Starts at a point and goes on forever.
• Angle: Formed by two rays meeting at a point.

Measuring and Comparing

• Perimeter: The distance around a shape.
• Area: The space inside a shape.
• Volume: The space inside a 3D object.

Why Geometry is Useful

Geometry helps you read maps, design spaces, and build things. It’s also handy for understanding patterns in art and nature!