 |
rule 1 : 3 sided polygon -> 3 sided + 4 sided polygon |
 |
rule 2 : 4 sided polygon -> 4 sided + 4 sided polygon |
 |
rule 3 : 4 sided polygon -> 3 sided + 5 sided polygon |
 |
rule 4 : 5 sided polygon -> 4 sided + 5 sided polygon |
 |
variation of rule 2 & 3 4 sided polygon -> 3 sided + 4 sided(2) + 5 sided polygon |