Sides

In mathematics, a side is a line segment that forms part of the boundary of a two-dimensional shape or three-dimensional solid. The number of sides a shape has depends on the shape itself. Here are some common shapes and the number of sides they have:

• Triangle: A triangle has 3 sides.
• Square: A square has 4 sides.
• Pentagon: A pentagon has 5 sides.
• Hexagon: A hexagon has 6 sides.
• Heptagon: A heptagon has 7 sides.
• Octagon: An octagon has 8 sides.
• Nonagon: A nonagon has 9 sides.
• Decagon: A decagon has 10 sides.

Shapes can have different types of sides, such as equal sides (like in a square) or unequal sides (like in a scalene triangle). Understanding the concept of sides is important for identifying and classifying different shapes.

Study Guide

To study sides, it's important to:

1. Memorize the number of sides for common shapes.
2. Practice identifying and counting the sides of various shapes.
3. Understand the difference between equal and unequal sides.
4. Explore real-world examples of shapes and their sides, such as buildings, signs, and everyday objects.

By mastering the concept of sides, you'll be able to recognize and work with different shapes more effectively.