Angle 11 is the alternate exterior of angle 5 meaning there is only 1 angle that is alternate of angle 5.
Option (b) is correct.
The attached figure shows the diagram of the given question.
To find how many angles are alternate exterior angles with angle 5.
What of exterior angle?
An angle formed by a transversal as it cuts one of two lines and situated on the outside of the line.
The angles on the same transversal line of 5 are 8, 7, 9, 10, 12, and 11. However, we are looking for alternate exterior angles not just exterior. 8, 7, 9, 10, and 12 are just exterior which leaves angle 11 as alternate exterior. Angle 11 is the alternate exterior of angle 5 meaning there is only 1 angle that is alternate of angle 5.
Since, angle 11 is the alternate exterior of angle 5 meaning there is only 1 angle that is alternate of angle 5.
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