(a) Using ruler a pair of compasses only, construct:
(i) a trapezium PQRS such that |PQ| = 6.8 cm, < PQR = 120(^o), QR||PS, |PS| =10.6 cm, and IPRI = 93 cm;
(ii) locus (l_1) of points equidistant from P and R;
(iii) locus (l_2) of points equidistant from Q and R
(b) Measure: (i) |QR|;
ii. < PSR
ii. < PSR
iii. |QY|, where Y is the point of intersection h and h.
Explanation
(a) The trapezium PQRS is as shown
(b) |QR| = (3.9 ± 0.1) cm, < PSR = (60 ± 1)(^o) and |QY| = (5.2 ± 0.1) cm.