Question Bank • QB_GA_109 NAT • 1 Mark

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Spatial Reasoning & 3D Representations

Question Statement:

Calculate the total number of line segments (edges) in a regular octahedron.

Answer Key:

12

Step-by-Step Solution & Explanation

A regular octahedron has 8 triangular faces and 6 vertices. By Euler's polyhedral formula ($V - E + F = 2$): $6 - E + 8 = 2 \implies 14 - E = 2 \implies E = 12$
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