Resize a Tikz Image to Fit the Page – Latex

To make a Tikz image fit in the page, use it in a resizebox.

\begin{center}
    \resizebox{\textwidth}{!}
    {\input{figures/figure.tikz}}
\end{center}

Yes of-course, you can have the Tikz code here instead adding it from another file using input.

Add Numbers to Figures and Tables – Latex – Beamer

To add numbers to figures and tables in a Beamer presentation, declare the following next to your document class,

\setbeamertemplate{caption}[numbered]

Hiding Subsections in Table of Contents – Latex – Beamer

To hide subsections in the table of contents produced by Beamer call for the table of contents in the following manner,

\tableofcontents[hideallsubsections]

Hide Headline – Latex – Beamer

To hide the header or headline in Beamer presentations, wrap the frames with \setbeamertemplate{headline}{}. Headline is the horizontal strip that contains the title of the presentation, author, chapter info and such.

For example, in Frame 1 and 2 below, headline will not be present.

{
\setbeamertemplate{headline}{}

\begin{frame}{Frame 1}
% some content
\end{frame}

\begin{frame}{Frame 2}
% some content
\end{frame}
}