If the two energy scales were similar and larger than thermal energy, the networks showed interesting rupturing behaviour. This is shown in the panels of Fig. , each panel being successive snapshots of a rupturing network. In this network, one horizontal bond breaks initially. The energy of this break is relieved by two nearby hexagons relaxing to accommodate the decagon between them. However, the top and bottom bonds of this decagon represent a new weak point in the network. As stretching continues, those bonds break and a tear rapidly propagates in a vertical line going through the original bond breaking site. A new rupture appears at the bottom left and joins the large tear; this gives the network enough flexibility to avoid tearing entirely, and a chain of bonds each with coordination number k = 2 holds the two network sections together before finally giving way.