cliparts/f/8/1/8/clipart-amazing-30-60-90-triangle-f818.svg image/svg+xml Open Clip Art Library amazing 30,60,90 triangle 2012-12-23T11:54:07 This shows how the angles in the 30,60,90 triangle can form part of a square, hexagon, or dodecagon http://openclipart.org/detail/173883/amazing-306090-triangle-by-10binary-173883 10binary 30 60 90 amazing chandler clip art clipart dodecagon hexagon isaac klebs polygon square triangle