iCoachMath
STEM Excellence Series: Empowering the Next Generation
DECAGON
DecagonVideo Examples: Geometry - Area of a Regular Decagon
Definition Of Decagon
Decagon is a polygon with 10 sides and equal number of angles.
More About Decagon
Each angle in a regular decagon is equal to 144°.
A regular decagon is one that has its 10 sides of equal length and 10 angles of equal measure.
Example of Decagon
The given polygon has 10 sides and 10 angles. So, it is a decagon.
Video Examples: Geometry - Area of a Regular Decagon
Solved Example on Decagon
Ques: Count the number of angles of the polygon.
Choices:
A. 10
B. 8
C. 6
D. 7
Correct Answer: A
Solution:
Step 1: This polygon has 10 angles.
Quick Summary
- A decagon has 10 sides.
- A regular decagon has 10 equal sides and 10 equal angles.
- Each angle in a regular decagon is equal to 144°.
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🍎 Teacher Insights
Use visual aids and real-world examples to help students understand the properties of decagons. Emphasize the difference between regular and irregular decagons.🎓 Prerequisites
- Polygons
- Angles
- Sides
Check Your Knowledge
Q1: How many sides does a decagon have?
Q2: What is the measure of each interior angle in a regular decagon?
Frequently Asked Questions
Q: How many sides does a decagon have?
A: A decagon has 10 sides.
Q: What is the measure of each angle in a regular decagon?
A: Each angle in a regular decagon measures 144 degrees.