LATERAL FACES
Definition Of Lateral Faces
The faces that join the bases of a solid are called Lateral Faces.
More About Lateral Faces
Lateral faces do not include the bases of a solid.
Example of Lateral Faces
The figure given above is a hexagonal prism and it has six lateral faces and two bases.
Video Examples: Angle between lateral faces of pyramid
Solved Example on Lateral Faces
Ques: How many lateral faces does a regular pentagonal prism have?
Choices:
A. 5
B. 7
C. 2
D. 6
Correct Answer: A
Solution:
Step 1: A regular pentagonal prism looks like the figure given below.
Step 2: It has two parallel and congruent pentagonal faces called bases.
Step 3: The faces that join the bases of a prism are called lateral faces.
Step 4: Five rectangles join the bases (pentagons) of a pentagonal prism.
Step 5: So, a regular pentagonal prism has 5 lateral faces.
Quick Summary
- Lateral faces connect the bases of a solid.
- Lateral faces are not the bases themselves.
🍎 Teacher Insights
Use physical models to demonstrate lateral faces. Emphasize the difference between lateral faces and bases.🎓 Prerequisites
- Faces of a 3D shape
- Bases of a 3D shape
- Prisms
- Pyramids
Check Your Knowledge
Q1: How many lateral faces does a regular pentagonal prism have?
Frequently Asked Questions
Q: Are the bases considered lateral faces?
A: No, the bases are not lateral faces.
Q: What shapes can lateral faces be?
A: Lateral faces are often rectangles or triangles, but can be other polygons depending on the solid.