20. Draw \( \overleftrightarrow{L M} \). Then draw \( \overrightarrow{N P} \) so that point \( N \) lies on \( \overleftrightarrow{L M} \).
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The Deep Dive
To create a visual representation of \( \overleftrightarrow{L M} \), imagine drawing a straight line that extends infinitely in both directions through points \( L \) and \( M \). Now, for \( \overrightarrow{N P} \), select any point \( N \) on this line. From \( N \), draw an arrow pointing towards a point \( P \) that lies off the line. That's it! You've successfully illustrated both figures, showing how lines can intersect and point in different directions. Remember, the beauty of geometry lies in its ability to represent relationships visually! Now, imagine the excitement of transforming this simple drawing into a more complex geometric figure by adding more lines and points—creating angles, triangles, or even more intricate shapes! The journey of visual creativity in geometry never truly ends; it opens up endless possibilities for exploration!