1. In Fig. 6.39, sides QP and RQ of PQR are produced to points S and T respectively. If
SPR = 135° and
PQT = 110°, find
PRQ.
Given,
PQR is a triangle, SPR =
,
PQT =
Now, TQP +
PQR =
(Linear pair)
So, PQR =
Since the side of QP of the triangle, PQR is produced to S
So, PQR +
PRQ =
(Exterior angle property of triangle)