In the figure `O` is the cențe and `A C`, BD are diameters. Prove that `A B=C D`.

In the figure-below, O is the centre of the circle and A B is a diameter. C is a point on the circle. i) Compute angle CAB ii) Draw another figure like this, with a different number for the size of angle C O B . Calculate angle CAB .

In the figure, Ois the centre of the circle and AB, CD are chords with angle O A B=angle 0 C D Rrove that A B=C D.

In the figure, O is the centre of the circle and A,B,C,D are points on it. If angleB=110^o , then What is the measure of angleAOC ? .

In the figure, O is the centre of the circle and A,B,C,D are points on it. If angleB=110^o , then What is the measure of angleD ? .

In the figure AB is a chord and CD is the diameter perpendicular to it. Prove that ABC is, an Isosceles triangle.

In the picture, O is the centre of the circle and A, B, C are points on it. Prove that /_OAC + /_ABC=90^@

In the figure, O is the origin and A(8,0), B(0,6) are two points.Write the equation of the circle with AB as diameter. .

In the figure below, O is the centre of the (circ)le and A, B, C are points on the (circ)le. What are the angles of Delta ABC ?