# PolygonAngle

PolygonAngle[poly]

gives a list of angles at the vertex points of poly.

PolygonAngle[poly,p]

gives the angle at the vertex point p of a polygon poly.

PolygonAngle[poly,i]

gives the angle at the point pi of poly in canonical form Polygon[{p1,,pn},data].

PolygonAngle[,"spec"]

gives the angle specified by "spec".

# Details • PolygonAngle is also known as interior angle.
• • PolygonAngle[poly, p] gives the angle delimited by the two adjacent sides intersecting at p.
• The following specifications "spec" can be given:
•  "Interior" interior (inside) angle at p "Exterior" exterior angle at p "FullExterior" full exterior angle at p
• • PolygonAngle[poly,p,"Interior"] is equivalent to PolygonAngle[poly,p].
• PolygonAngle[poly,p,"Exterior"] is equivalent to π-PolygonAngle[poly,p].
• PolygonAngle[poly,p,"FullExterior"] is equivalent to 2π-PolygonAngle[poly,p].
• PolygonAngle can be used with symbolic polygons in GeometricScene.

# Examples

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## Basic Examples(2)

The list of angles at the vertex points:

 In:= In:= Out= The angle at the vertex point {-2,0}:

 In:= In:= Out= The angle at the point 1 of in canonical form:

 In:= Out= ## Properties & Relations(2)

Introduced in 2019
(12.0)