Definition:Transversal (Geometry)/Exterior Angle

Definition

An exterior angle of a transversal is an angle which is not between the two lines cut by a transversal.

In the above figure, the exterior angles with respect to the transversal $EF$ are:

$\angle AHE$

$\angle CJF$

$\angle BHE$

$\angle DJF$

Also see

• Definition:Interior Angle of Transversal
• Definition:Corresponding Angles of Transversal
• Definition:Alternate Angles of Transversal

Source

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): transversal
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): transversal
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): transversal