Neat parallelograms for vectors, moments

Easy parallelogram drawing for Newtonian mechanics.

This page here: http://www.ballooncalculus.org/mechanics

For encouraging similar diagrams freehand or with a set-square.

For helping get beyond vertical and horizontal decomposition… e.g. for parallel or perpendicular to an inclined plane.

Interactive but all in the browser - no uploading or downloading but you can load and save work.

Thanks for looking. Feedback welcome.