Introduction, Angles In A Segment, Angle In The Semi Circle
Cyclic Quadrilateral, Cyclic Point And Opposite Angles Of A Cyclic Quadrilateral, Perpendicular Drawn On The Chord By The Center Bisects It , Line Joining The Center Of The Circle And The Mid Point Of The Chord Is Perpendicular On The Chord
Same Measure Chords Make Same Angles On The Center, Sum Of Opposite Angles In A Cyclic Quadrilateral
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