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JAMB - Mathematics (1979 - No. 46)

In the figure, PQ is parallel to SQ ; QS bisets < PSQ, < PQS is 65o and < RPS is 20o. What is the size of < PRS?
45o
35o
40o
30o
42o

설명

PSR = 65o x 2

= 130o

PRS = 180o - (130o + 20o)

= 30o

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