Overlapping Circles - Patterns with sets of 4 circles

Fold circles twice and open to give creases at right angles.

Overlap the circles using theses diameters as a guide.

Create a pattern made of four circles in this way.

Create many blocks like this in two colours and then interleave them to create this shape.

Add more circles to create this tessellation;

or interweave the blocks of circles like this

to create this tessellation:

Or overlap the sets of four circles in this way

to create this tessellation