Difference between revisions of "2010 AMC 8 Problems/Problem 6"

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Which of the following has the greatest number of line of symmetry?
 
Which of the following has the greatest number of line of symmetry?
 
<math> \textbf{(A)}\ \text{ Equilateral Triangle} </math>
 
<math> \textbf{(A)}\ \text{ Equilateral Triangle} </math>
 +
<math> \textbf{(B)}\ \text{Non-square rhombus} </math>
 +
<math> \textbf{(C)}\ \text{Non-square rectangle} </math>
 +
<math> \textbf{(D)}\ \text{Isosceles Triangle} </math>
 +
<math> \textbf{(E)}\ \text{Square} </math>
  
 
==Solution==
 
==Solution==

Revision as of 18:06, 4 November 2012

Problem

Which of the following has the greatest number of line of symmetry? $\textbf{(A)}\ \text{ Equilateral Triangle}$ $\textbf{(B)}\ \text{Non-square rhombus}$ $\textbf{(C)}\ \text{Non-square rectangle}$ $\textbf{(D)}\ \text{Isosceles Triangle}$ $\textbf{(E)}\ \text{Square}$

Solution

An equilateral triangle has 3 lines of symmetry. A non-square rhombus has 2 lines of symmetry. A non-square rectangle has 2 lines of symmetry. An isosceles trapezoid has 1 line of symmetry. A square has 8 lines of symmetry.


Therefore, the answer is $\textbf{(E)}\ \text{square}$.

See Also

2010 AMC 8 (ProblemsAnswer KeyResources)
Preceded by
Problem 5
Followed by
Problem 7
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AJHSME/AMC 8 Problems and Solutions