Question

which represents an exterior angle of triangle abf?
∠bad
∠afe
∠cad
∠cab

Explanation:

An exterior angle of a triangle is formed by one side of the triangle and the extension of an adjacent side. For triangle \(ABF\), \(\angle BAD\) is formed by side \(AB\) of \(\triangle ABF\) and the extension \(AD\) of adjacent side \(AF\). \(\angle AFE\) is not adjacent to any side of \(\triangle ABF\) in the required way for an exterior - angle. \(\angle CAD\) and \(\angle CAB\) are not related to the sides of \(\triangle ABF\) in the exterior - angle formation.

Answer:

\(\angle BAD\)