Let me know and I will update the site. This site links to a variety of open source and creative commons pictures, and I give credit when known. If I have missed yours, please accept my apologies and let me know so I can fix it.
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Link to pages where I need to give credit.
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Triangle (Wikipedia)A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted △ABC.