Problems involving more than one tangent from the same point outside a circle . Check solutions to all questions below: NCERT Solutions for Class 10 Maths Circles - Exercise 10.2.

XY and X 1 Y 1 are two parallel tangents to a circle with centre O and another tangent AB with point of contact C, intersecting XY at A and X 1 Y 1 at B, is drawn. Prove that ∠AOB = 90°.

Circles, sectors and arcs - Edexcel The circumference of a circle is its outside edge, and is the same distance from the centre at every point along its length. This distance is called the radius.