CIRCLE THEOREMS

Welcome to your CIRCLE THEOREMS

In the following diagram, O is the centre of the circle. AB and BC are the tangents to the circle. Find the length of BC.
In the following diagram, O is the centre of the circle. ABCD is a rectangle. Calculate the value of y in the following diagram.
Find the value of angle z in the following diagram.
Find the value of angle t in the following diagram.
In the following diagram, what is the angle ABC?
What is the value of angle a in the following diagram?
Find the value of angle x in the following diagram.
What is the value of angle b?
What is the value of angle c?
What is the value of angle BCD?
What is the value of angle ADC?
In the following diagram, BC is a tangent to the circle. O is the centre of the circle. What is the value of angle COB?
In the following diagram, O is the centre of the circle. BC is a tangent to the circle. If AC=AB, what is the angle ABC?
Find the angle marked s in the following diagram.
Find the angle marked x in the following diagram.