How to align coordinates vertically and horizontally in TikZ












0















I have points with irrational coordinates, because I'm mixing polar and Cartesian coordinates. I'd like to specify a coordinate as the x-value of one thing and the y-value of another thing.



In this specific example, I want the two lines on the left to have the same left endpoints.



documentclass{standalone}
usepackage{tikz}
usetikzlibrary{calc}

begin{document}

begin{tikzpicture}
coordinate (left) at (155:2);
coordinate (top) at (65:2);
coordinate (bottom) at (245:2);
coordinate (right) at (335:2);

coordinate (leftEdge) at ($ (left) + (-2,0) $);
coordinate (bottomEdge) at ($ (bottom) + (0,-2) $);

path[draw=black] (left) -- (top) -- (right) -- (bottom) -- cycle;
path[draw=blue] (left) -- (leftEdge);
path[draw=black] (bottom) -- (bottomEdge);
path[draw=red] (bottom) -- ++(-2,0);
end{tikzpicture}

end{document}


I think there's a way to do this with something like (leftEdge.x,bottom.y), but I've been unsuccessful in getting it to work.



enter image description here



How can I get the red edge to go as far left as the blue edge?









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    0















    I have points with irrational coordinates, because I'm mixing polar and Cartesian coordinates. I'd like to specify a coordinate as the x-value of one thing and the y-value of another thing.



    In this specific example, I want the two lines on the left to have the same left endpoints.



    documentclass{standalone}
    usepackage{tikz}
    usetikzlibrary{calc}

    begin{document}

    begin{tikzpicture}
    coordinate (left) at (155:2);
    coordinate (top) at (65:2);
    coordinate (bottom) at (245:2);
    coordinate (right) at (335:2);

    coordinate (leftEdge) at ($ (left) + (-2,0) $);
    coordinate (bottomEdge) at ($ (bottom) + (0,-2) $);

    path[draw=black] (left) -- (top) -- (right) -- (bottom) -- cycle;
    path[draw=blue] (left) -- (leftEdge);
    path[draw=black] (bottom) -- (bottomEdge);
    path[draw=red] (bottom) -- ++(-2,0);
    end{tikzpicture}

    end{document}


    I think there's a way to do this with something like (leftEdge.x,bottom.y), but I've been unsuccessful in getting it to work.



    enter image description here



    How can I get the red edge to go as far left as the blue edge?









    share

























      0












      0








      0








      I have points with irrational coordinates, because I'm mixing polar and Cartesian coordinates. I'd like to specify a coordinate as the x-value of one thing and the y-value of another thing.



      In this specific example, I want the two lines on the left to have the same left endpoints.



      documentclass{standalone}
      usepackage{tikz}
      usetikzlibrary{calc}

      begin{document}

      begin{tikzpicture}
      coordinate (left) at (155:2);
      coordinate (top) at (65:2);
      coordinate (bottom) at (245:2);
      coordinate (right) at (335:2);

      coordinate (leftEdge) at ($ (left) + (-2,0) $);
      coordinate (bottomEdge) at ($ (bottom) + (0,-2) $);

      path[draw=black] (left) -- (top) -- (right) -- (bottom) -- cycle;
      path[draw=blue] (left) -- (leftEdge);
      path[draw=black] (bottom) -- (bottomEdge);
      path[draw=red] (bottom) -- ++(-2,0);
      end{tikzpicture}

      end{document}


      I think there's a way to do this with something like (leftEdge.x,bottom.y), but I've been unsuccessful in getting it to work.



      enter image description here



      How can I get the red edge to go as far left as the blue edge?









      share














      I have points with irrational coordinates, because I'm mixing polar and Cartesian coordinates. I'd like to specify a coordinate as the x-value of one thing and the y-value of another thing.



      In this specific example, I want the two lines on the left to have the same left endpoints.



      documentclass{standalone}
      usepackage{tikz}
      usetikzlibrary{calc}

      begin{document}

      begin{tikzpicture}
      coordinate (left) at (155:2);
      coordinate (top) at (65:2);
      coordinate (bottom) at (245:2);
      coordinate (right) at (335:2);

      coordinate (leftEdge) at ($ (left) + (-2,0) $);
      coordinate (bottomEdge) at ($ (bottom) + (0,-2) $);

      path[draw=black] (left) -- (top) -- (right) -- (bottom) -- cycle;
      path[draw=blue] (left) -- (leftEdge);
      path[draw=black] (bottom) -- (bottomEdge);
      path[draw=red] (bottom) -- ++(-2,0);
      end{tikzpicture}

      end{document}


      I think there's a way to do this with something like (leftEdge.x,bottom.y), but I've been unsuccessful in getting it to work.



      enter image description here



      How can I get the red edge to go as far left as the blue edge?







      tikz-pgf positioning coordinates





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      asked 7 mins ago









      Pi FisherPi Fisher

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