CLOSED FIGURE
Definition Of Closed Figure
If the start and end points of a figure are same, then it is called a Closed Figure.
More About Closed Figure
At least three lines or sides are required to form a closed polygon.
Video Examples: Classification Of Triangles - An Introduction / Maths Geometry
Example of Closed Figure
All the figures shown are closed figures as their start and end points are same.
Solved Example onClosed Figure
Ques: Identify the closed figure from the following?
Choices:
A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
Correct Answer: B
Solution:
Step 1: The start and end points of figures 1 and 4 are not same.
Step 2: In figure 3, two lines are intersecting. So, it is not a closed figure.
Step 3: Here, only figure 2 has the start and end points same.
Step 4: So, figure 2 represents a closed figure.
Quick Summary
- Closed figures have the same start and end points.
- They form a complete boundary without any openings.
- At least three lines or sides are required to form a closed polygon.
🍎 Teacher Insights
Use visual aids like ropes or drawings to demonstrate closed and open figures. Have students create their own closed figures using different materials.🎓 Prerequisites
- Lines
- Points
- Basic Shapes
Check Your Knowledge
Q1: Which of the following is a closed figure?
Q2: A closed figure must have at least how many sides?
Frequently Asked Questions
Q: What is the difference between a closed and an open figure?
A: A closed figure's start and end points meet, forming a complete boundary. An open figure has start and end points that do not meet, leaving an opening.
Q: Can a circle be a closed figure?
A: Yes, a circle is a closed figure because it has a continuous boundary with the start and end points meeting.