title: How to count lines within polygons?
body: <p>I would like to count the amount of lines within polygons.</p>
  
  <p>The questions I would like to answer are:
  How many lines are within each polygon (enveloped AND intersecting)?
  How long is each line within each polygon OR how long are all the lines (combined) within each polygon?</p>
  
  <p>I am using <code>QGIS 2.18.12</code> (do not know how to write code)</p>
  
  <p><a href="https://i.stack.imgur.com/grQXa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/grQXa.png" alt="Visualization of question and desired result"></a></p>