Definition:Quadrilateral/Dart

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Definition

A dart is an irregular quadrilateral with a reflex angle.

Darts.png


Also defined as

Some sources prefer to reserve the term dart for a reflex-angled trapezium which has both pairs of adjacent sides equal, for example $EFGH$ in the diagram above.

Other uses restrict the term specifically to the dart in the Penrose tiles.


Also known as

A dart whose adjacent sides are equal is also called a deltoid.


Also see


Sources