Hand Drawn Lines in PowerPoint and Curved Lines
You can draw curved lines in PowerPoint or make a hand drawn effect in PowerPoint using the freeform shape line. This curved line tool let you design really impressive lines and create the effect of a line drawing itself.
Splines in PowerPoint let you draw a free curved line or similar to a spline bezier curve that we studied in maths.
In order to use it you need to choose the curve shape and then draw a shape. Then you can edit the points and configure the curved line to use any form that you wish. This is great to simulate charts using curved lines as well as other applications like paths.