LATERAL EDGES
Definition Of Lateral Edges
The edges that form the lateral faces of a solid are called the Lateral Edges.
Example of Lateral Edges
As the above figure is a pentagonal prism, the base of the prism is a pentagon. There are 5 lateral faces and they are connected by 5 lateral edges. Hence, the solid has 5 lateral edges.
Video Examples: Lateral Edges
Solved Example on Lateral Edges
Ques: How many lateral edges are there in the figure shown?
Choices:
A. 4
B. 7
C. 3
D. 1
Correct Answer: A
Solution:
Step 1: The lateral faces meet to form the lateral edges.
Step 2: In the given solid, there are 4 lateral faces and they are connected by 4 lateral edges.
Step 3: Hence, there are 4 lateral edges in the given solid.
Quick Summary
- Lateral edges are the edges where lateral faces meet.
- The number of lateral edges depends on the type of solid.
🍎 Teacher Insights
Use physical models to help students visualize lateral edges.🎓 Prerequisites
- Basic understanding of geometric shapes
- Knowledge of edges and faces of solids
Check Your Knowledge
Q1: How many lateral edges does a triangular prism have?
Q2: A pentagonal prism has how many lateral edges?
Q3: How many lateral edges are in the figure shown? (Assume a quadrilaterial prism)
Frequently Asked Questions
Q: What is the difference between a lateral edge and a base edge?
A: Lateral edges connect the lateral faces, while base edges form the base of the solid.
Q: How do I find the number of lateral edges in a prism?
A: The number of lateral edges in a prism is equal to the number of sides of its base.