Paper Mathematics - Part 3

Geometry

Above is an image of a left single half twist Möbius strip and a right single half twist Möbius strip glued together at right angles.

What shape do you get after you cut along the dashed lines?

Details and Assumptions:

A half twist is a $180^{\circ}$ rotation of one side of the paper before you stick them together.
We define a twisted loop to be a loop with a positive even number of half twists.

See Part 1 and Part 2.

A single twisted loop with no knot Two Möbius strips which are seperate A square Two love hearts linked together A single twisted loop with a knot Two Möbius strips which are linked together Two twisted loops which are linked together A single Möbius strip with a knot