Geometrical Properties of Circle:
If 2 chords in a circle area congruent, then the 2 angles at the centre of the circle are identical.
AB = CD (Equal Chords)
∠ AOB = ∠ COD
The perpendicular bisector of a chord passes through the centre of a circle
AD = DB
∠CDA = ∠CDB
2 congurent chords in a circle are of the same distance from the centre of the circle.
AB = CD
OX = OY
Angle Properties Of Cicle:
Angle in a semi circle is a right angle.
∠AXB = ∠AYB = 90°
Angles in the same segment are equal
∠p = ∠p = ∠p