# Without changing the shape of the figure, how I can decrease the size?

\begin{figure}
{
\begin{center}
\begin{tikzpicture}[scale=2.00]
\node [draw, thick, minimum size=3cm, circle] at (0.5,1.3) {};
\node [draw, thick, minimum size=3cm, circle] at (0.0,0) {};
\node [draw, thick, minimum size=3cm, circle] at (1,0) {};
\node [draw, dotted, minimum size=3cm, circle] at (2.2,0.25) {};
\node [draw, dotted, minimum size=3cm, circle] at (1.65,1.05) {};
\node [draw, dotted, minimum size=3cm, circle] at (1.45,2.15) {};

\draw (0.7,1.30) node{$C$};
\draw (0.5,1.30) node{.};
\draw (-0.1,-0.10) node{$A$};
\draw (0.183,0.07) node{\footnotesize{$\alpha$}};
\draw (0.183,0.37) node{\footnotesize{$\gamma$}};
\draw (0.82,0.29) node{\footnotesize{$\beta$}};

\draw (0.5,0.70) node {$O$};

\draw (0,0) node{.};
\draw (1.1,0) node{$B$};
\draw (1,0) node{.};

\draw (0,0)--(0.50,0.57);
\draw (-0.002,-0.0)--(0.50,1.31);
\draw (1.005,0)--(0.50,1.31);

\draw (1,0)--(0.50,0.57);
\draw (0,0)--(1,0);
\draw [thick]( 0.12 , 0.0 )-- ( 0.119 , 0.0155 )-- ( 0.118 , 0.0218 )-- ( 0.117 , 0.0267 )-- ( 0.116 , 0.0307 )-- ( 0.115 , 0.0343 )-- ( 0.114 , 0.0375 )-- ( 0.113 , 0.0404 )-- ( 0.112 , 0.0431 )-- ( 0.111 , 0.0456 )-- ( 0.11 , 0.048 )-- ( 0.109 , 0.0502 )-- ( 0.108 , 0.0523 )-- ( 0.107 , 0.0543 )-- ( 0.106 , 0.0562 )-- ( 0.105 , 0.0581 )-- ( 0.104 , 0.0599 )-- ( 0.103 , 0.0616 )-- ( 0.102 , 0.0632 )-- ( 0.101 , 0.0648 )-- ( 0.1 , 0.0663 )-- ( 0.099 , 0.0678 )-- ( 0.098 , 0.0693 )-- ( 0.097 , 0.0706 )-- ( 0.096 , 0.072 )-- ( 0.095 , 0.0733 )-- ( 0.094 , 0.0746 )-- ( 0.093 , 0.0758 )-- ( 0.092 , 0.077 )-- ( 0.091 , 0.0782 )-- ( 0.09 , 0.0794 )-- ( 0.089 , 0.0805 )-- ( 0.088 , 0.0816 )-- ( 0.087 , 0.0826 )-- ( 0.086 , 0.0837 )-- ( 0.085 , 0.0847 )-- ( 0.084 , 0.0857 )-- ( 0.083 , 0.0867 )-- ( 0.082 , 0.0876 )-- ( 0.081 , 0.0885 )-- ( 0.08 , 0.0894 )-- ( 0.079 , 0.0903 )-- ( 0.078 , 0.0912 )-- ( 0.077 , 0.092 )-- ( 0.076 , 0.0929 )-- ( 0.075 , 0.0937 )-- ( 0.074 , 0.0945 )-- ( 0.073 , 0.0952 )-- ( 0.072 , 0.096
)-- ( 0.071 , 0.0967 )-- ( 0.07 , 0.0975 )-- ( 0.069 , 0.0982 );

\draw [thick]( 0.635 , 0.4224 )-- ( 0.63 , 0.418 )-- ( 0.625 , 0.4139 )-- ( 0.62 , 0.41 )-- ( 0.615 , 0.4064 )-- ( 0.61 , 0.403 )-- ( 0.605 , 0.3998 )-- ( 0.6 , 0.3968 )-- ( 0.595 , 0.394 )-- ( 0.59 , 0.3914 )-- ( 0.585 , 0.389 )-- ( 0.58 , 0.3867 )-- ( 0.575 , 0.3846 )-- ( 0.57 , 0.3827 )-- ( 0.565 , 0.3809 )-- ( 0.56 , 0.3792 )-- ( 0.555 , 0.3777 )-- ( 0.55 , 0.3764 )-- ( 0.545 , 0.3751 )-- ( 0.54 , 0.374 )-- ( 0.535 , 0.3731 )-- ( 0.53 , 0.3723 )-- ( 0.525 , 0.3716 )-- ( 0.52 , 0.371 )-- ( 0.515 , 0.3706 )-- ( 0.51 , 0.3703 )-- ( 0.505 , 0.3701 )-- ( 0.5 , 0.37 )-- ( 0.495 , 0.3701 )-- ( 0.49 , 0.3703 )-- ( 0.485 , 0.3706 )-- ( 0.48 , 0.371 )-- ( 0.475 , 0.3716 )-- ( 0.47 , 0.3723 )-- ( 0.465 , 0.3731 )-- ( 0.46 , 0.374 )-- ( 0.455 , 0.3751 )-- ( 0.45 , 0.3764 )-- ( 0.445 , 0.3777 )-- ( 0.44 , 0.3792 )-- ( 0.435 , 0.3809 )-- ( 0.43 , 0.3827 )-- ( 0.425 , 0.3846 )-- ( 0.42 , 0.3867 )-- ( 0.415 , 0.389 )-- ( 0.41 , 0.3914 )-- ( 0.405 , 0.394 )-- ( 0.4 , 0.3968 )-- ( 0.395 , 0.3998 )-- ( 0.39 , 0.403 )-- ( 0.
385 , 0.4064 )-- ( 0.38 , 0.41 )-- ( 0.375 , 0.4139 )-- ( 0.37 , 0.418 );

\draw( 0.09 , 0.265141 )-- ( 0.1 , 0.261534 )-- ( 0.11 , 0.257488 )-- ( 0.12 , 0.252982 )-- ( 0.13 , 0.247992 )-- ( 0.14 , 0.242487 )-- ( 0.15 , 0.236432 )-- ( 0.16 , 0.229783 )-- ( 0.17 , 0.222486 )-- ( 0.18 , 0.214476 )-- ( 0.19 , 0.20567 );

\draw( 0.83 , 0.189737 )-- ( 0.84 , 0.203224 )-- ( 0.85 , 0.215407 )-- ( 0.86 , 0.226495 )-- ( 0.87 , 0.236643 )-- ( 0.88 , 0.245967 )-- ( 0.89 , 0.254558 )-- ( 0.9 , 0.262488 )-- ( 0.91 , 0.269815 );
\draw (0.52,0.32) node{\footnotesize{$\pi$-$2\alpha$}};

\draw (-.4,-0.8) node{$C_1$};
\draw (1.5,-0.8) node{$C_2$};
\draw (0.52,-0.72) node{$P$};
\draw (-.25,0.80) node{$R$};
\draw (1.25,0.80) node{$Q$};

\draw (0.40,2.15) node{$C_3$};
\draw[dotted](0.71,2.02)--(1.45,2.15)--(2.02,1.70)--(1.65,1.05)--(2.41,0.97)--(2.2,0.25)--(1.7,-0.30)--(1,0)--(0.50,-0.55)--(0,0)--(-0.0,0.75)--(0.5,1.30)--(0.71,2.02);
\draw[dotted](0.5,1.30)--(1.00,0.75)--(1.65,1.05);

\draw[dotted] (1.00,0.75)--(1,0);

\end{tikzpicture}
\end{center}
}
\caption{}
\label{figcir}
\end{figure}

-

Normally adjusting the scale factor which you have set as scale=2.00 would do the job. However in this case you have nodes of fixed minimum size, and also text. So in that case you can use scalebox. Here is what your figure looks like with a scale of factor 0.75, 0.50:

Unfortunately this method also scales the text. I am not sure that there is an easy automated way to adjust this figure without going back to the s/w that you used to generate it in the first place.

I don't think is very difficult of a figure to draw yourself directly with tikz, but there is a learning curve involved. If you are doing many of these different figures than I would recommend you learn tikz as then you would have much more control over the figure.

## Notes:

• With this method you will need to place the scalebox{}{} in the floating environment, not the tikzpicture.

The only other option I can think of is to adjust the minimum size of the circles based on the scale factor, but then the output gets cluttered as there is too much information:

\pgfmathsetmacro{\MinSize}{3*\Scale/2}
\node [draw, thick, minimum size=\MinSize cm, circle, red] at (0.5,1.3) {};
\node [draw, thick, minimum size=\MinSize cm, circle, blue] at (0.0,0) {};
\node [draw, thick, minimum size=\MinSize cm, circle, brown] at (1,0) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, magenta] at (2.2,0.25) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, violet] at (1.65,1.05) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, green] at (1.45,2.15) {};


Here is the output with scale changed from 2.00, to 1.5, and 1.0 (colors added so I could trace the output with the code):

As you can see the figure is quite cluttered so can't really get much of a scaling this way.

## Code: Using \scalebox scaling:

\documentclass{article}
\usepackage{tikz}

\newcommand{\MyPic}{
\begin{tikzpicture}[scale=2.00]
\node [draw, thick, minimum size=3cm, circle] at (0.5,1.3) {};
\node [draw, thick, minimum size=3cm, circle] at (0.0,0) {};
\node [draw, thick, minimum size=3cm, circle] at (1,0) {};
\node [draw, dotted, minimum size=3cm, circle] at (2.2,0.25) {};
\node [draw, dotted, minimum size=3cm, circle] at (1.65,1.05) {};
\node [draw, dotted, minimum size=3cm, circle] at (1.45,2.15) {};

\draw (0.7,1.30) node{$C$};
\draw (0.5,1.30) node{.};
\draw (-0.1,-0.10) node{$A$};
\draw (0.183,0.07) node{\footnotesize{$\alpha$}};
\draw (0.183,0.37) node{\footnotesize{$\gamma$}};
\draw (0.82,0.29) node{\footnotesize{$\beta$}};

\draw (0.5,0.70) node {$O$};

\draw (0,0) node{.};
\draw (1.1,0) node{$B$};
\draw (1,0) node{.};

\draw (0,0)--(0.50,0.57);
\draw (-0.002,-0.0)--(0.50,1.31);
\draw (1.005,0)--(0.50,1.31);

\draw (1,0)--(0.50,0.57);
\draw (0,0)--(1,0);
\draw [thick]( 0.12 , 0.0 )-- ( 0.119 , 0.0155 )-- ( 0.118 , 0.0218 )-- ( 0.117 , 0.0267 )-- ( 0.116 , 0.0307 )-- ( 0.115 , 0.0343 )-- ( 0.114 , 0.0375 )-- ( 0.113 , 0.0404 )-- ( 0.112 , 0.0431 )-- ( 0.111 , 0.0456 )-- ( 0.11 , 0.048 )-- ( 0.109 , 0.0502 )-- ( 0.108 , 0.0523 )-- ( 0.107 , 0.0543 )-- ( 0.106 , 0.0562 )-- ( 0.105 , 0.0581 )-- ( 0.104 , 0.0599 )-- ( 0.103 , 0.0616 )-- ( 0.102 , 0.0632 )-- ( 0.101 , 0.0648 )-- ( 0.1 , 0.0663 )-- ( 0.099 , 0.0678 )-- ( 0.098 , 0.0693 )-- ( 0.097 , 0.0706 )-- ( 0.096 , 0.072 )-- ( 0.095 , 0.0733 )-- ( 0.094 , 0.0746 )-- ( 0.093 , 0.0758 )-- ( 0.092 , 0.077 )-- ( 0.091 , 0.0782 )-- ( 0.09 , 0.0794 )-- ( 0.089 , 0.0805 )-- ( 0.088 , 0.0816 )-- ( 0.087 , 0.0826 )-- ( 0.086 , 0.0837 )-- ( 0.085 , 0.0847 )-- ( 0.084 , 0.0857 )-- ( 0.083 , 0.0867 )-- ( 0.082 , 0.0876 )-- ( 0.081 , 0.0885 )-- ( 0.08 , 0.0894 )-- ( 0.079 , 0.0903 )-- ( 0.078 , 0.0912 )-- ( 0.077 , 0.092 )-- ( 0.076 , 0.0929 )-- ( 0.075 , 0.0937 )-- ( 0.074 , 0.0945 )-- ( 0.073 , 0.0952 )-- ( 0.072 , 0.096
)-- ( 0.071 , 0.0967 )-- ( 0.07 , 0.0975 )-- ( 0.069 , 0.0982 );

\draw [thick]( 0.635 , 0.4224 )-- ( 0.63 , 0.418 )-- ( 0.625 , 0.4139 )-- ( 0.62 , 0.41 )-- ( 0.615 , 0.4064 )-- ( 0.61 , 0.403 )-- ( 0.605 , 0.3998 )-- ( 0.6 , 0.3968 )-- ( 0.595 , 0.394 )-- ( 0.59 , 0.3914 )-- ( 0.585 , 0.389 )-- ( 0.58 , 0.3867 )-- ( 0.575 , 0.3846 )-- ( 0.57 , 0.3827 )-- ( 0.565 , 0.3809 )-- ( 0.56 , 0.3792 )-- ( 0.555 , 0.3777 )-- ( 0.55 , 0.3764 )-- ( 0.545 , 0.3751 )-- ( 0.54 , 0.374 )-- ( 0.535 , 0.3731 )-- ( 0.53 , 0.3723 )-- ( 0.525 , 0.3716 )-- ( 0.52 , 0.371 )-- ( 0.515 , 0.3706 )-- ( 0.51 , 0.3703 )-- ( 0.505 , 0.3701 )-- ( 0.5 , 0.37 )-- ( 0.495 , 0.3701 )-- ( 0.49 , 0.3703 )-- ( 0.485 , 0.3706 )-- ( 0.48 , 0.371 )-- ( 0.475 , 0.3716 )-- ( 0.47 , 0.3723 )-- ( 0.465 , 0.3731 )-- ( 0.46 , 0.374 )-- ( 0.455 , 0.3751 )-- ( 0.45 , 0.3764 )-- ( 0.445 , 0.3777 )-- ( 0.44 , 0.3792 )-- ( 0.435 , 0.3809 )-- ( 0.43 , 0.3827 )-- ( 0.425 , 0.3846 )-- ( 0.42 , 0.3867 )-- ( 0.415 , 0.389 )-- ( 0.41 , 0.3914 )-- ( 0.405 , 0.394 )-- ( 0.4 , 0.3968 )-- ( 0.395 , 0.3998 )-- ( 0.39 , 0.403 )-- ( 0.
385 , 0.4064 )-- ( 0.38 , 0.41 )-- ( 0.375 , 0.4139 )-- ( 0.37 , 0.418 );

\draw( 0.09 , 0.265141 )-- ( 0.1 , 0.261534 )-- ( 0.11 , 0.257488 )-- ( 0.12 , 0.252982 )-- ( 0.13 , 0.247992 )-- ( 0.14 , 0.242487 )-- ( 0.15 , 0.236432 )-- ( 0.16 , 0.229783 )-- ( 0.17 , 0.222486 )-- ( 0.18 , 0.214476 )-- ( 0.19 , 0.20567 );

\draw( 0.83 , 0.189737 )-- ( 0.84 , 0.203224 )-- ( 0.85 , 0.215407 )-- ( 0.86 , 0.226495 )-- ( 0.87 , 0.236643 )-- ( 0.88 , 0.245967 )-- ( 0.89 , 0.254558 )-- ( 0.9 , 0.262488 )-- ( 0.91 , 0.269815 );
\draw (0.52,0.32) node{\footnotesize{$\pi$-$2\alpha$}};

\draw (-.4,-0.8) node{$C_1$};
\draw (1.5,-0.8) node{$C_2$};
\draw (0.52,-0.72) node{$P$};
\draw (-.25,0.80) node{$R$};
\draw (1.25,0.80) node{$Q$};

\draw (0.40,2.15) node{$C_3$};
\draw[dotted](0.71,2.02)--(1.45,2.15)--(2.02,1.70)--(1.65,1.05)--(2.41,0.97)--(2.2,0.25)--(1.7,-0.30)--(1,0)--(0.50,-0.55)--(0,0)--(-0.0,0.75)--(0.5,1.30)--(0.71,2.02);
\draw[dotted](0.5,1.30)--(1.00,0.75)--(1.65,1.05);

\draw[dotted] (1.00,0.75)--(1,0);

\end{tikzpicture}%
}

\begin{document}
\scalebox{0.75}{\MyPic}
\scalebox{0.5}{\MyPic}
\end{document}


## Code: Using tikz scaling:

\documentclass{article}
\usepackage{tikz}

\newcommand{\MyPic}[1]{%
\def\Scale{#1}
\begin{tikzpicture}[scale=\Scale, thick]
\pgfmathsetmacro{\MinSize}{3*\Scale/2}
\node [draw, thick, minimum size=\MinSize cm, circle, red] at (0.5,1.3) {};
\node [draw, thick, minimum size=\MinSize cm, circle, blue] at (0.0,0) {};
\node [draw, thick, minimum size=\MinSize cm, circle, brown] at (1,0) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, magenta] at (2.2,0.25) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, violet] at (1.65,1.05) {};
\node [draw, dotted, minimum size=\MinSize cm, circle, green] at (1.45,2.15) {};

\draw (0.7,1.30) node{$C$};
\draw (0.5,1.30) node{.};
\draw (-0.1,-0.10) node{$A$};
\draw (0.183,0.07) node{\footnotesize{$\alpha$}};
\draw (0.183,0.37) node{\footnotesize{$\gamma$}};
\draw (0.82,0.29) node{\footnotesize{$\beta$}};

\draw (0.5,0.70) node {$O$};

\draw (0,0) node{.};
\draw (1.1,0) node{$B$};
\draw (1,0) node{.};

\draw (0,0)--(0.50,0.57);
\draw (-0.002,-0.0)--(0.50,1.31);
\draw (1.005,0)--(0.50,1.31);

\draw (1,0)--(0.50,0.57);
\draw (0,0)--(1,0);
\draw [thick]( 0.12 , 0.0 )-- ( 0.119 , 0.0155 )-- ( 0.118 , 0.0218 )-- ( 0.117 , 0.0267 )-- ( 0.116 , 0.0307 )-- ( 0.115 , 0.0343 )-- ( 0.114 , 0.0375 )-- ( 0.113 , 0.0404 )-- ( 0.112 , 0.0431 )-- ( 0.111 , 0.0456 )-- ( 0.11 , 0.048 )-- ( 0.109 , 0.0502 )-- ( 0.108 , 0.0523 )-- ( 0.107 , 0.0543 )-- ( 0.106 , 0.0562 )-- ( 0.105 , 0.0581 )-- ( 0.104 , 0.0599 )-- ( 0.103 , 0.0616 )-- ( 0.102 , 0.0632 )-- ( 0.101 , 0.0648 )-- ( 0.1 , 0.0663 )-- ( 0.099 , 0.0678 )-- ( 0.098 , 0.0693 )-- ( 0.097 , 0.0706 )-- ( 0.096 , 0.072 )-- ( 0.095 , 0.0733 )-- ( 0.094 , 0.0746 )-- ( 0.093 , 0.0758 )-- ( 0.092 , 0.077 )-- ( 0.091 , 0.0782 )-- ( 0.09 , 0.0794 )-- ( 0.089 , 0.0805 )-- ( 0.088 , 0.0816 )-- ( 0.087 , 0.0826 )-- ( 0.086 , 0.0837 )-- ( 0.085 , 0.0847 )-- ( 0.084 , 0.0857 )-- ( 0.083 , 0.0867 )-- ( 0.082 , 0.0876 )-- ( 0.081 , 0.0885 )-- ( 0.08 , 0.0894 )-- ( 0.079 , 0.0903 )-- ( 0.078 , 0.0912 )-- ( 0.077 , 0.092 )-- ( 0.076 , 0.0929 )-- ( 0.075 , 0.0937 )-- ( 0.074 , 0.0945 )-- ( 0.073 , 0.0952 )-- ( 0.072 , 0.096
)-- ( 0.071 , 0.0967 )-- ( 0.07 , 0.0975 )-- ( 0.069 , 0.0982 );

\draw [thick]( 0.635 , 0.4224 )-- ( 0.63 , 0.418 )-- ( 0.625 , 0.4139 )-- ( 0.62 , 0.41 )-- ( 0.615 , 0.4064 )-- ( 0.61 , 0.403 )-- ( 0.605 , 0.3998 )-- ( 0.6 , 0.3968 )-- ( 0.595 , 0.394 )-- ( 0.59 , 0.3914 )-- ( 0.585 , 0.389 )-- ( 0.58 , 0.3867 )-- ( 0.575 , 0.3846 )-- ( 0.57 , 0.3827 )-- ( 0.565 , 0.3809 )-- ( 0.56 , 0.3792 )-- ( 0.555 , 0.3777 )-- ( 0.55 , 0.3764 )-- ( 0.545 , 0.3751 )-- ( 0.54 , 0.374 )-- ( 0.535 , 0.3731 )-- ( 0.53 , 0.3723 )-- ( 0.525 , 0.3716 )-- ( 0.52 , 0.371 )-- ( 0.515 , 0.3706 )-- ( 0.51 , 0.3703 )-- ( 0.505 , 0.3701 )-- ( 0.5 , 0.37 )-- ( 0.495 , 0.3701 )-- ( 0.49 , 0.3703 )-- ( 0.485 , 0.3706 )-- ( 0.48 , 0.371 )-- ( 0.475 , 0.3716 )-- ( 0.47 , 0.3723 )-- ( 0.465 , 0.3731 )-- ( 0.46 , 0.374 )-- ( 0.455 , 0.3751 )-- ( 0.45 , 0.3764 )-- ( 0.445 , 0.3777 )-- ( 0.44 , 0.3792 )-- ( 0.435 , 0.3809 )-- ( 0.43 , 0.3827 )-- ( 0.425 , 0.3846 )-- ( 0.42 , 0.3867 )-- ( 0.415 , 0.389 )-- ( 0.41 , 0.3914 )-- ( 0.405 , 0.394 )-- ( 0.4 , 0.3968 )-- ( 0.395 , 0.3998 )-- ( 0.39 , 0.403 )-- ( 0.
385 , 0.4064 )-- ( 0.38 , 0.41 )-- ( 0.375 , 0.4139 )-- ( 0.37 , 0.418 );

\draw( 0.09 , 0.265141 )-- ( 0.1 , 0.261534 )-- ( 0.11 , 0.257488 )-- ( 0.12 , 0.252982 )-- ( 0.13 , 0.247992 )-- ( 0.14 , 0.242487 )-- ( 0.15 , 0.236432 )-- ( 0.16 , 0.229783 )-- ( 0.17 , 0.222486 )-- ( 0.18 , 0.214476 )-- ( 0.19 , 0.20567 );

\draw( 0.83 , 0.189737 )-- ( 0.84 , 0.203224 )-- ( 0.85 , 0.215407 )-- ( 0.86 , 0.226495 )-- ( 0.87 , 0.236643 )-- ( 0.88 , 0.245967 )-- ( 0.89 , 0.254558 )-- ( 0.9 , 0.262488 )-- ( 0.91 , 0.269815 );
\draw (0.52,0.32) node{\footnotesize{$\pi$-$2\alpha$}};

\draw (-.4,-0.8) node{$C_1$};
\draw (1.5,-0.8) node{$C_2$};
\draw (0.52,-0.72) node{$P$};
\draw (-.25,0.80) node{$R$};
\draw (1.25,0.80) node{$Q$};

\draw (0.40,2.15) node{$C_3$};
\draw[dotted](0.71,2.02)--(1.45,2.15)--(2.02,1.70)--(1.65,1.05)--(2.41,0.97)--(2.2,0.25)--(1.7,-0.30)--(1,0)--(0.50,-0.55)--(0,0)--(-0.0,0.75)--(0.5,1.30)--(0.71,2.02);
\draw[dotted](0.5,1.30)--(1.00,0.75)--(1.65,1.05);

\draw[dotted] (1.00,0.75)--(1,0);

\end{tikzpicture}%
}

\begin{document}
\MyPic{1.5}
\MyPic{1.0}
\end{document}

-
Thank you very much. – user12290 Nov 11 '12 at 19:18