Question 1 Report
In the diagram, find the size of the angle marked ao
Answer Details
2 x s = 280o(Angle at centre = 2 x < at circum)
S = 280o2 280 o 2
= 140
< O = 360 - 280 = 80o
60 + 80 + 140 + a = 360o
(< in a quad); 280 = a = 360
a = 360 - 280
a = 80o
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