Problem:
Which of the following figures has the greatest number of lines of symmetry?
Answer Choices:
A. equilateral triangle 
B. non-square rhombus 
C. non-square rectangle 
D. isosceles trapezoid 
E. square 
Solution:
A square has four lines of symmetry.

The number of lines of symmetry for the other figures are: equilateral triangle , non-square rhombus , non-square rectangle , isosceles trapezoid .
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Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions