1.The size nke okpukpu abụọ imewe, nwere ike na-eme dị iche iche ike putter.
A na-eji osisi siri ike eme ihe bụ isi osisi nwere ezigbo usoro geometric na nlọghachite bọl na-akpaghị aka.
3.Nwee ezigbo ahịhịa, ụzọ abụọ dị mma, ezigbo echiche.
Mpempe akwụkwọ 4.Free, nsị na - akwụghị ụgwọ, mkpakọ na iguzogide mkpali, iweghachi ngwa ngwa na mgbake.
5.Shịkọ ụzọ na mkpụrụ osisi bụ ihe nkịtị.Mada ya na osisi siri ike dị ọcha.