Join 60,000+ competitive exam aspirants
Which of the following is the odd one out?
Square
Rectangle
Circle
Triangle
Circle
Look for geometric properties: polygons versus curves. Square, rectangle, and triangle are all rectilinear polygons formed by straight lines, whereas a circle is bounded by a curved line.
Look for geometric properties: polygons versus curves. Square, rectangle, and triangle are all rectilinear polygons formed by straight lines, whereas a circle is bounded by a curved line.
Analyze Shape Properties
Examine the geometric construction of each option. A square, rectangle, and triangle are closed figures bounded entirely by straight line segments (polygons).
Identify the Anomaly
A circle is a closed geometric figure formed by a continuous curved line with no straight sides or vertices, making it fundamentally different from the other three.
A: Square is a 4-sided polygon made of straight lines. B: Rectangle is a 4-sided polygon made of straight lines. D: Triangle is a 3-sided polygon made of straight lines. All three are polygons unlike the circle.
C is correct because a circle is a curved geometric shape, whereas square, rectangle, and triangle are rectilinear polygons made of straight line segments.
In classification questions involving shapes, always check properties like straight lines versus curves, number of sides, or symmetry to find the distinct rule.