In the adjoining figure, name the point(s)

(i) in the interior of ∠DOE

(ii) in the exterior of ∠EOF

(iii) on ∠EOF

(i) The interior of ∠DOE is the region of the plane lying between the rays OD and OE.

∴ The point in the interior of ∠DOE is A.

(ii) The exterior of ∠EOF is the region of the plane lying outside the angle EOF.

∴ The points in the exterior of ∠EOF are A, D and C.

(iii) The points lying on the boundary (on either of the rays OE or OF) belong to the angle ∠EOF.

∴ The points on ∠EOF is O, B, E, F.