(a) Five points are: O, B, C, D, E
(b) A line: DE, DB,OE, OB
(c) Four rays: OD, OE, OC, OB
(d) Four line segments: DE, OE, OC, OB,, OD
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow