Penrose triangle shaded label
image/svg+xml
Open Clip Art Library
Penrose triangle shaded label
2009-07-12T21:29:04
http://openclipart.org/detail/27150/impossible-triangle-by-sivvus-27150
sivvus
clip art
clipart
colour
colour
image
impossible
impossible
media
optical illusion
optical illusion
png
public domain
svg
triangle
triangle
Paul Sherman, WPClipart