external angle

Noun
  1. The supplement of an interior angle of a polygon (synset 113913228)
    is a type of: angle - the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
    subtypes: hip - (architecture) the exterior angle formed by the junction of a sloping side and a sloping end of a roof
    same as: exterior angle

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