An isosceles triangle has two equal length sides. These triangles happen to be very easy to create in pixel art. However, the easiest way is still to use inkscape. 等腰三角形鑲嵌 isosceles、tessellation、triangles 等腰三角形、鑲嵌、三角形 資料來源：openclipart ( https://openclipart.org/ )
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