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(a)

(b)

Figure 20: Trispectrum geometrical factor for the kite quadrilaterals (represented on the left panel) as a function of the opening angle $\theta$, and plotted for various values of $\alpha$. The trispectrum is enhanced in the squeezed limit $\theta \to 0$. The bump for ${\theta }_{\text{p}}=\pi -2\alpha$ corresponds to the parallelogram limit for which the unconnected part is no longer vanishing.