#angular_shape__angularshape__angularity  a shape having one or more sharp angles
  supertype:  #shape__form  the spatial arrangement of something as distinct from its substance; "geometry is the mathematical science of shape"
  subtype:  #furcation__bifurcation__forking  a division into two or more branches
  subtype:  #jog  a sharp change in direction; "there was a jog in the road"
  subtype:  #zigzag__zig__zag  an angular shape characterized by sharp turns in alternating directions
  subtype:  #crease__fold__plication__flexure__crimp__bend  an angular shape made by folding
     subtype:  #pleat__plait  any of various types of fold formed by doubling fabric back upon itself and then pressing or stitching into shape
        subtype:  #box_pleat__boxpleat  a flat double pleat made by folding under the fabric on either side of it
        subtype:  #inverted_pleat  a box pleat reversed so that the fullness is turned inward
        subtype:  #kick_pleat  pleat in back of a straight skirt to allow ease in walking
        subtype:  #knife_pleat__knifepleat  a single pleat turned in one direction
           subtype:  #sunburst_pleat__sunray_pleat  knife pleat cut on the bias to produce a flared effect
        subtype:  #tuck  a narrow flattened pleat or fold that is stitched in place
           subtype:  #dart  a tapered tuck made in dressmaking
     subtype:  #kink__twist__twirl  a sharp bend in a line produced when a line having a loop is pulled tight
     subtype:  #pucker__ruck  an irregular fold in an otherwise even surface (as in cloth)

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