ВС. OppL'S
а
12 In the diagram alongside PQ = 30, QS = 10, SR = 15, RP = 40
and QR = 20.
Prove QS||PR.
b
If PS and QR intersect at X, calculate the length of QX. [6]
с
Express the area of APQR as a fraction of the area of PQSR.
Show all your calculations.
[6]
40
equo
30
20
R
[4]
0
10
15
S