In the diagram above PQ is parallel to RS What ... - JAMB Mathematics 2003 Question
A
360o
B
200o
C
180o
D
90o
correct option: a
γ + S = 180(Allied angles)
S = 180 - γ
α + P = 180(Allied angles)
p = 180 - α
β = P + S
β = 180 - α + 180 - γ
β = 360 - α - γ
β + α + γ = 360
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