\documentclass{article}
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\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{graphicx}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage[colorlinks=true, allcolors=tudelftblue]{hyperref} %sets hyperlink colour
\usepackage{caption}
\usepackage{subcaption}
\usepackage{xcolor}
\usepackage{roboto} % for Roboto Slab font
\usepackage{float}
\usepackage{titling}
\usepackage{blindtext}\usepackage{titlesec}
\usepackage[square,sort,comma,numbers]{natbib}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage{tikz}
\usepackage{geometry}
\usepackage{sectsty}
\usepackage{amsmath}
\usepackage{tikzpagenodes}
\usepackage{booktabs}
\usepackage{listings}
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\definecolor{tudelftcyan}{RGB}{0,166,214}
\definecolor{tudelftblue}{RGB}{0, 118, 194}
\geometry{a4paper, margin=2cm}
\allsectionsfont{\color{black}} %sets colour for all headers
\usepackage{helvet}
\renewcommand{\familydefault}{\sfdefault}
\sectionfont{\fontfamily{RobotoSlab-TLF}\selectfont}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\input{titlepage}
%%% Create a table of contents
\tableofcontents
\newpage
\addcontentsline{toc}{section}{Introduction}
\section*{Introduction}
Sample introduction text with a sample reference \cite{HussFarinotti2014}. Oh and here a sample figure with a sample caption, see \autoref{fig:random line}.
\begin{figure}[H]
\centering
\includegraphics[width=0.6\textwidth]{images/Sample graph.png}
\caption{A graph of something.}
\label{fig:random line}
\end{figure}
\section{Methodology}
This section has a subsection.
\subsection{Subsection}
This subsection contains \autoref{eq:1}.
\begin{equation}
\label{eq:1}
h(r) = \cfrac{Q}{2\pi T} ln(\cfrac{r_i}{r_0})+h_0
\end{equation}
\section{Results}
\section{Discussion}
\newpage
\addcontentsline{toc}{section}{References}
\bibliographystyle{apalike}
\bibliography{ref}
\newpage
\appendix
\section{Additional graphs and data}
\end{document}
%All other official TU Delft colours
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%You can use these to change the hyperlink colour or the colour of the header or whatever. Glück Auf!