<p>Easy parallelogram drawing for Newtonian mechanics.</p> <p>This page here: <a href="http://www.ballooncalculus.org/mechanics" target="_blank" rel="nofollow">http://www.ballooncalculus.org/mechanics</a></p> <p>For encouraging similar diagrams freehand or with a set-square.</p> <p>For helping get beyond vertical and horizontal decomposition… e.g. for parallel or perpendicular to an inclined plane.</p> <p>Interactive but all in the browser - no uploading or downloading but you can load and save work.</p> <p>Thanks for looking. Feedback welcome.</p>