
Included angle
From Latin: includere "to shut in, enclose"
Definition: The
angle
made by two lines with a common
vertex
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 topics
General
Angle Types
Angle relationships
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