Note: In the given figures, O is the centre of the circles.
1. ABCD is a cyclic quadrilateral. ZBAO = 20° and BCO = 15°. Find AOC and ADC.
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AOC =70* and ADC=145*
Following properties are used here:-
1) Exterior Angle Property of Triangle
2) Sum of Angles in a complete angle
3) Angle of major arc is twice the angle of minor arc
Following properties are used here:-
1) Exterior Angle Property of Triangle
2) Sum of Angles in a complete angle
3) Angle of major arc is twice the angle of minor arc
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