10.2 In the diagram, ST and VT are tangents to the circle at S and V respectively. R is a point on the circle and W is a point on chord RS such that WT is parallel to RV. SV and WV are drawn. WT intersects SV at K. Let S₂ = =x. R 10.2.1 1 S 2 W 3 12 1 x 23 4 37K 2 1 3 Write down, with reasons, THREE other angles EACH equal to x. 10.2.2 Prove, with reasons, that: (a) WSTV is a cyclic quadrilateral (b) AWRV is isosceles (c) AWRV ||| ATSV (d) RV = SR TS KV 2 (6) (2) (4) (3) (4) [25]