Basic Concepts
In a nutshell: Explore the properties and measurements of shapes and spaces.
## 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!
Examples
- Measuring the perimeter of a garden to buy fencing.
- Calculating the area of a wall to know how much paint to buy.