Here is the figure I want to draw:
Could someone show me how to draw tilted arrows please? I know how to draw a commutative triangle like this:
\documentclass{book}
\usepackage{tikz-cd}
\begin{document}
\[
\begin{tikzcd}
A \arrow [r, dashed ,"\tilde{f}"] \arrow[swap]{dr}{f} & E \arrow{d}{i} \\
& X
\end{tikzcd}
\]
\end{document}
tilted
arrows?