This question already has an answer here:

I want draw a simple shark.

    \draw[fill=#1] (1,1) to[bend left=50] (3,1) to[bend left=50] 
    \draw[fill=#1] (3,1) -- (3.5,1.5) -- (3.3,1) -- (3.5,.5) -- cycle;
    \draw[fill=white] (1.6,1.1) circle (.15cm); 
    \draw[fill=#1] (1.55,1.1) circle (.05cm);         

enter image description here

marked as duplicate by Sebastiano, Stefan Pinnow, CarLaTeX, user31729, user121799 Feb 3 '18 at 18:27

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  • You were using this terminology before. What precisely do you mean by "using only the library tikz". Does it mean that you don't want to load any TikZ libraries? (TikZ itself is a package, which has a lot of libraries that one can load.) – user121799 Feb 3 '18 at 15:47
  • The drawings are for math exercises. That loads a program that only has tikz and I can not load more packages. – Marina Feb 3 '18 at 15:54
  • \usetikzlibrary{shapes.geometric,calc} or \usepackage{tikz-3dplot} fails – Marina Feb 3 '18 at 16:04
  • Could you please explain in more detail what you mean by that? That is, you may want to post a new question where you describe what you tried and which error messages you get. I am very confident that someone will be able to help. – user121799 Feb 3 '18 at 16:31
  • ooh we ducks are afraid of sharks! – Paulo Cereda Feb 4 '18 at 9:45

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