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Three-Dimensional Figures — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsThree-Dimensional Figures3 Marks
Question
Verify Euler's relation for the following:
A square pyramid.
✓

Answer

Euler's relation is:
F - E + V = 2
A square pyramid:
Number of faces = F = 2 triangular + 3 rectangular = 5
Number of edges = E = 8
Number of vertices = V = 5
⇒ (F - E + V) = 5 - 8 + 5 = 2

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