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Fold and Cut Theorem

Posted: December 6th, 2019, 10:08 pm
by mhlingo
Hello! I have been trying to create a non symmetrical trapezoid and a non-convex pentagon using the fold and cut theorem but have been struggling. I was wondering if anyone knew how to do this since the shapes I need to make are not symmetrical. Thank you!

ImageC87C6C96-1583-451E-9B63-197F52C4D0BA by Minna Lingo, on Flickr

Re: Fold and Cut Theorem

Posted: December 7th, 2019, 2:50 pm
by Baltorigamist
(Since this appears to be a homework problem, I won’t give the full solutions.)

For the trapezoid, extend the bases until they intersect and fold the angle bisector.
The pentagon is a little more complicated. I would start with folding bisectors at the tips.

Good luck!

Re: Fold and Cut Theorem

Posted: December 7th, 2019, 7:09 pm
by Tankoda
Check out this article https://erikdemaine.org/foldcut/.

You'll want to construct the straight skeletons for those polygons.

I don't think this is giving too much away