Copyright © University of Cambridge. All rights reserved.
'Bendy Quad' printed from http://nrich.maths.org/
Four rods are hinged at their ends to form a convex quadrilateral
with sides of length $3$, $4$, $5$ and $6$ (in that order).
Investigate the different shapes that the quadrilateral can
What are all the possible values of the angles if the quadrilateral