OCTAGON
Definition Of Octagon
A polygon with eight sides is called an octagon.
More About Octagon
The figure below shows an octagon. All its sides do not measure the same.
An octahedron has 8 faces, 12 edges and 6 vertices.
Example of Octahedron
The figure below shows an octagon. All its sides do not measure the same.
The figure below shows a regular octagon. All its sides measure the same.
Video Examples: How to Draw an Octagon
Solved Example on Octahedron
Ques: How many interior angles does an octagon have?
Choices:
A. 9
B. 7
C. 8
D. none of these
Correct Answer: C
Solution:
Step 1: A polygon with 8 sides is called an octagon.
Step 2: The number of interior angles in a polygon is equal to the number of sides.
Step 3: So, there are 8 interior angles in an octagon.
Quick Summary
- An octagon has 8 sides.
- Octagons can be regular (all sides equal) or irregular (sides not equal).
- Octagons have 8 interior angles.
🍎 Teacher Insights
Use real-world examples of octagons (stop signs) to help students visualize the shape. Emphasize the difference between regular and irregular octagons.🎓 Prerequisites
- Basic shapes (squares, triangles)
- Counting to 8
- Understanding of sides and angles
Check Your Knowledge
Q1: How many sides does an octagon have?
Q2: Which of these is NOT true about octagons?
Frequently Asked Questions
Q: How many sides does an octagon have?
A: An octagon has 8 sides.
Q: Are all sides of an octagon the same length?
A: No, only regular octagons have sides of equal length.