512x512pxhexagon shape illustration, regular polygon diagram, black and white geometric art, internal angles of hexagon, geometric line art design, simple geometric shapes, polygonal figure analysis
1571x691pxIELTS language fluency diagram, English language skills illustration, international English testing system, blue angle logo, language proficiency chart, educational infographic, communication skills development
800x800pxRegular octagon shape, equiangular polygon, black and white geometry, internal angle diagram, geometric symmetry illustration, polygonal structure design, monochrome line art
