Answer  % Correct 

Heart  99%

Pi  94%

Octagon  93%

Hexagon  91%

Venus Symbol  88%

Infinity  88%

Maple Leaf  88%

Star of David  83%

Horseshoe  82%

Yin Yang  76%

Skull and Crossbones  71%

Crescent  70%

Radioactivity  70%

Trapezoid  66%

Hammer and Sickle  63%

Fleurdelis  44%

{Dodeca}hedron  42%

Ichthys (Jesus Fish)  37%

Ankh  28%

Caduceus  18%
