Question

What is the sum of the total number of Faces, Vertices, and Edges of a Triangular prism?

• A. 15
• B. 18
• C. 20
• D. 22

Answer 1

The correct option is C 20

• In geometry, an edge is where two Faces meet in an object.
• The common endpoint of two or more rays or line segments is known as Vertex.
• In any geometric solid that is composed of flat surfaces, each flat surface is called a Face.

So, Triangular Prism has 5 Faces, 9 Edges and 6 Vertices.

$\therefore$ number of Edges + number of Vertices + number of Faces
=9+6+5
=20