Parallel-line angles

<p style="text-align: center">Vertically opposite angles are equal. <br><br></p>
<p style="text-align: center">(Vertically opposite angles)</p>
<div class="content-block"><figure class="question-figure aligncenter" style="text-align: center;"><img src="https://vocwkpgapvksartxhhor.supabase.co/storage/v1/object/sign/question-images/pasted/1763986856299-9k9qup62u96.png?token=eyJraWQiOiJiZTM3ZjNhZS05OWM4LTQ5ZGQtYjRiNS1iMTBhYmJhNjY5MWYiLCJhbGciOiJIUzI1NiJ9.eyJ1cmwiOiJxdWVzdGlvbi1pbWFnZXMvcGFzdGVkLzE3NjM5ODY4NTYyOTktOWs5cXVwNjJ1OTYucG5nIiwic2NvcGUiOiJkb3dubG9hZCIsImlhdCI6MTc5MzAwODAxNywiZXhwIjoxNzkzMDA4MzE3fQ.kzULIoFnPwXCvMnTxFb0w_qOoubyvmcbpoobEPAc_eI" style="max-width: min(200px, 100%); height: auto; display: block;" class="aligncenter custom-width" /></figure></div>
<p style="text-align: center">$\begin{align}
  & a{}^\circ =c{}^\circ  \\ 
 & b{}^\circ =d{}^\circ  \\ 
\end{align}$ <br></p>

$\begin{align}
  & a{}^\circ =c{}^\circ  \\ 
 & b{}^\circ =d{}^\circ  \\ 
\end{align}$ 


Vertically Opposite Angles

Vertically Opposite Angles

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