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### What are the new features in TikZ/pgf 3.0?

Since the December 20, 2013, we have new major release of the wonderful TikZ/pgf package: version 3.0.0! 1 Unfortunately, I was not able to find a nice human readable list of changes, that goes to ...
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### Best way to create this image, square and angle

I have just started looking into tikz, and trying to create the simple image below. I took a stab at it but could not quite do it. ABCD is a square and E is the midpoint on DC and F is the midpoint ...
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### Problem with babel and tikz using \draw

I'm trying the next code: \documentclass[pdftex,spanish]{article} \usepackage{babel} \usepackage{tikz} \begin{document} Simple arrow: \begin{tikzpicture} \draw[->] (-1.5,0) -- (1.5,0); ...
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### Filling angles with arcs in TikZ

Using TikZ, how can I fill in an angle of a given polygon with a colored arc? For example, given the triangle \filldraw[fill=yellow, draw=black] (10,0) -- (-2,9) -- (4,-3) -- (10,0); I'd like a blue ...
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### How to draw orthogonal vectors using TikZ

I have the problem, that I want to draw a vector that is decomposed into two orthogonal parts. A short example: \documentclass{article} \usepackage{tikz} \usetikzlibrary{calc} \begin{document} ...
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### Help with drawing a triangle in using tikz

I'm trying to draw a triangle using TikZ. I managed to get it completed, but now I'm having trouble with getting the node to go into the body of the triangle. I've only been using TikZ for a couple ...
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### fixed point arithmetic is all wacky now [closed]

Prior to Tikz 3.0, the use of \usepackage{fp}\usetikzlibrary{fixedpointarithmetic} would increase the accuracy of calculations. I haven't used these packages since the update. However, I tried them ...
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### Draw angle between two lines in a circle

I'm trying to draw an angle between two lines. I have this code so far, but i cant draw a angle. How do I do it? I'm using PGF/TikZ. \begin{figure} \begin{tikzpicture} \begin{axis}[ ...
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### How to put a mark on an arc (tikz,decoration)

I have a problem with this code : \documentclass{article} \usepackage{tikz} \usetikzlibrary{decorations.markings} \begin{document} \begin{tikzpicture}[decoration={markings, mark = at position .5 ...
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### Tikz: drawing an arc without using an angle

Can an arc be drawn without using an angle but two locations? \documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \pgfmathsetmacro{\a}{2.5} \pgfmathsetmacro{\b}{2} ...
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### Drawing an arc of a circle using its center and endpoints

I have a display illustrating the rule for calculating the sine and cosine for a sum of two angles. The measure of $\angle{AQP}$ is $x$. The last three lines in the code give the commands to name of ...
I have the following piece of code and I would like to add two things: Add a label to the red dot i.e., the intersection of the line segments. Unfortunately, just a ${...}$ does not seem to work. I ...