# How to fade the color of an angle?

I'm trying to fade the color of an angle from the vertex to the outside but neither the top/bottom color our inner/outer options seem to do it the right way.

\documentclass[tikz, border=2mm]{standalone}

\usepackage{tikz, tkz-euclide}

\usetkzobj{all}

\begin{document}

\begin{tikzpicture}[scale=.8]
\tkzDefPoints{0/0/A, 4/0/B, 0/3/C}
\tkzMarkAngle[bottom color=red!50, top color= white, size=.7, draw opacity=0](C,B,A)
\tkzMarkRightAngle(B,A,C)
\tkzDrawSegments(A,B A,C B,C)
\tkzLabelAngle[pos=1](C,B,A){$\alpha$}
\tkzLabelPoints[above](C)
\tkzLabelPoints[below](A)
\tkzLabelPoints[right](B)
\end{tikzpicture}

\end{document}


I wanted to make it darker closer to B. Any way I can do it?

Thanks!

• What about left color/right color? That does work (kind of). – TeXnician Sep 22 '17 at 9:56
• yes, it does work better! didn't cross my mind to try left/right. Thanks – Concept7 Sep 22 '17 at 10:01