Question:
Triangle, Pentagon, Hexagon, Septagon, Nonagon, Hendecagon
Triangle, Pentagon, Hexagon, Septagon, Nonagon, Hendecagon
Show Hint
Convert geometric names into their numerical side counts. Hidden numerical patterns often become obvious immediately.
Updated On: Jun 12, 2026
- Triangle
- Pentagon
- Septagon
- Hexagon
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The Correct Option is D
Solution and Explanation
Concept:
Observe the number of sides represented by each polygon.
\[
\text{Triangle}=3
\]
\[
\text{Pentagon}=5
\]
\[
\text{Hexagon}=6
\]
\[
\text{Septagon}=7
\]
\[
\text{Nonagon}=9
\]
\[
\text{Hendecagon}=11.
\]
Step 1: Identify the pattern. The numbers \[ 3,\ 5,\ 7,\ 9,\ 11 \] are consecutive odd numbers.
Step 2: Locate the exception. The number of sides in a hexagon is \[ 6, \] which is even. Hence it does not fit the odd-number pattern.
Step 3: Conclusion. The odd one out is \[ \boxed{\text{Hexagon}}. \]
Step 1: Identify the pattern. The numbers \[ 3,\ 5,\ 7,\ 9,\ 11 \] are consecutive odd numbers.
Step 2: Locate the exception. The number of sides in a hexagon is \[ 6, \] which is even. Hence it does not fit the odd-number pattern.
Step 3: Conclusion. The odd one out is \[ \boxed{\text{Hexagon}}. \]
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