In order for the pentagons

- corresponding angles taken in order are equal, that is,
*A*=*F, B*=*G, C*=*H, D*=*K,*and*E*=*L,*and - the sides about their equal angles are proportional in the same order:
*EA*:*AB*= *LF*:*FG,**AB*:*BC*= *FG*:*GH,**BC*:*CD*= *GH*:*HK,**CD*:*EF*= *HK*:*KL,*and*EA*:*AB*= *KL*:*LF.*