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We calculate Wilson loops in lowest order of perturbation theory fortriangular contours whose edges are circular arcs. Based on a suitabledisentanglement of the relations between metrical and conformal parameters ofthe contours, the result fits perfectly in the structure predicted by theanomalous conformal Ward identity. The conformal remainder function depends inthe generic 4D case on three cusp and on three torsion angles. The restrictionson these angles imposed by the closing of the contour are discussed in detailand also for cases in 3D and 2D.

Wilson loops for triangular contours with circular edges