Figure 1
Squares and rhombuses

Figure 2
Hexagons and triangles

Figure 3
Squares and parallelograms

Figure 4
Centers of squares around a parallelogram

Figure 5
Hinged hexagons

Figure 6
Octagons and squares

Figure 7
Hinged triangles

Figure 8
Hexagons with linkages

Figure 9
Squares with linkages

Figure 10
Linked triangles