Home » Logical Reasoning » Verbal Classification

Verbal reasoning — Odd one out: Identify the single word that does NOT belong with the plane figures listed.

Difficulty: Easy

triangle
circle
oval
sphere

Correct Answer: sphere

Explanation:

Introduction / Context:
Geometry distinguishes 2-dimensional (plane) figures from 3-dimensional solids. Three options are planar shapes, while one is a solid. Discriminating dimensionality is the core reasoning task here.

Given Data / Assumptions:

Set: triangle, circle, oval, sphere
Conventional Euclidean definitions.

Concept / Approach:
Classify by dimensionality. Triangle, circle, and oval lie in a plane (2D). A sphere is a 3D object with volume. Therefore, the sphere does not belong with the planar shapes.

Step-by-Step Solution:

triangle → 2D polygon.circle → 2D locus equidistant from a point.oval → 2D rounded figure (e.g., ellipse-like).sphere → 3D surface; set of points equidistant from a center in space.

Verification / Alternative check:

Only “sphere” has volume and can cast a 3D shadow with thickness; the others are flat figures.

Why Other Options Are Wrong:

triangle / circle / oval: All are 2D figures; they share the same dimensional class.

Common Pitfalls:

Confusing “oval” and “ellipse” terminology; either way, it remains 2D, unlike a sphere.

Verbal reasoning — Odd one out: Identify the single word that does NOT belong with the plane figures listed.

More Questions from Verbal Classification

Discussion & Comments