Secants and Tangents to a Circle

In the figure,PA and PB are the tangents to a circle of centre 'O'. If ∠APB = 48⁰ then ∠AOP =

• 68⁰

• 66⁰

• 56⁰

• 76⁰

In the figure,PA and PB are the tangents to a circle of centre 'O'. If ∠AOP = 45⁰ then ∠APB =

• 65⁰

• 135⁰

• 90⁰

• 22.5⁰

The limit of a secant to a circle is a ……… to the circle

• Chord

• Diameter

• Arc

• Tangents

What is the definition of a secant?

• A line segment whose endpoints are on the circle.

• A line that intersects a circle in one point.

• A line that intersects a circle in two points.

• A line segment which intersects the circle at the point of secancy.

A tangent to a circle is ________________________ to the radius drawn to the point of tangency.

• congruent

• perpendicular

• complimentary

• supplementary

The tangents drawn at the end points of diameter of a circle are

• coinsides

• parallel

• perpendicular

• not co planner

The length of the tangents that can drawn to a circle is 20 cm radius from external point which is 25 cm away from the center is

• 30 cm

• 12 cm

• 15 cm

• 18 cm

If two concentric circles are radius 5 cm and 3 cm are drawn, then the length of the chord of the larger circle which touches the smaller circle is ____.

• 8 cm

• 4 cm

• 10 cm

• 12 cm