Polygon Sides Property

Polygon Sides Property problems present five polygons where four have an even number of sides (4,6,8) and one has an odd number of sides (3,5,7), or vice versa. You must identify which polygon has a different side count parity. These problems test knowledge of polygon properties and parity classification.

10Worksheets
200+Practice Questions
HardDifficulty
2-3 hoursHours to Master

Introduction to Polygon Sides Property

Polygon Sides Property problems present five polygons where four have an even number of sides (4,6,8) and one has an odd number of sides (3,5,7), or vice versa. You must identify which polygon has a different side count parity. These problems test knowledge of polygon properties and parity classification.

Prerequisites

Polygon side counting Even and odd number concepts Triangle (3 sides), quadrilateral (4), pentagon (5), hexagon (6) Parity classification (even/odd)
Why This Matters: Polygon Sides Property appears in 1-2 questions in SSC CGL and Banking PO exams. It tests geometric knowledge and parity recognition.

How to Solve Polygon Sides Property Problems

1

Step 1: Count the number of sides for each polygon

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Step 2: Classify each count as even or odd

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Step 3: Determine which parity appears most frequently

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Step 4: The figure with the opposite parity is the odd one out

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Step 5: Verify that all other figures share the same parity

Pro Strategy: Count sides systematically. All figures with the same side count parity belong to the same group. The outlier will have the opposite parity (even vs odd).

Example Problem

Example: Four polygons with even sides (4,4,6,6) and one with odd sides (5). Which is odd? Solution: Step 1: Sides: 4(even),4(even),6(even),6(even),5(odd) Step 2: Most common = even Step 3: Pentagon (5 sides) is different Answer: The pentagon is the odd one out

Pro Tips & Tricks

  • Triangle = 3 sides (odd)
  • Quadrilateral = 4 sides (even)
  • Pentagon = 5 sides (odd)
  • Hexagon = 6 sides (even)
  • Heptagon = 7 sides (odd)
  • Octagon = 8 sides (even)

Shortcut Methods to Solve Faster

Even-sided polygons: square, rectangle, hexagon, octagon
Odd-sided polygons: triangle, pentagon, heptagon
The outlier often has the only odd number of sides in a set of evens

Common Mistakes to Avoid

Counting vertices instead of sides
Confusing pentagon with hexagon
Forgetting that circles have no straight sides

Exam Importance

Polygon Sides Property is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
1-2 questions
BANKING PO
1-2 questions
RAILWAYS RRB
1-2 questions
CAT
1-2 questions
GMAT
1-2 questions
INSURANCE
1-2 questions

Ready to Master Polygon Sides Property?

Start with Worksheet 1 and work your way up to expert level! Each worksheet includes:

20 practice questions
Detailed solutions
Step-by-step explanations
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