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Included angle
From Latin: includere "to shut in, enclose"
When two lines meet at a common point (vertex)
the angle between them is called the included angle.
The two lines define the angle. So for example in the figure above we could refer to the angle ∠ABC
as the "included angle of
BA and
 BC ".
Or we could refer to " BA and
BC and their included angle".
See also Included side Related angle topicsGeneralAngle TypesAngle relationships
(C) 2009 Copyright John Page
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