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JAMB - Mathematics (1979 - No. 46)
In the figure, PQ is parallel to SQ ; QS bisets < PSQ, < PQS is 65
o
and < RPS is 20
o
. What is the size of < PRS?
45
o
35
o
40
o
30
o
42
o
解释
PSR = 65
o
x 2
= 130
o
PRS = 180
o
- (130
o
+ 20
o
)
= 30
o
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