Circles Pinnacle 10th Quizizz

A circle has a number of tangents equal to

• 0

• 1

• 2

• Infinite

How many tangents can be drawn from a point outside a circle?

• 0

• 1

• 2

• Infinite

What is the relationship between the radius of a circle and the length of a tangent drawn from a point outside the circle?

• They are equal

• The radius is longer

• The tangent is longer

• They are unrelated

If TP and TQ are the two tangents to a circle with centre O so that ∠POQ = 110°, then ∠PTQ is equal to

• 60

• 70

• 80

• 90

The length of a tangent from a point A at a distance 5 cm from the centre of the circle is 4 cm. The radius of the circle is:

• 3

• 5

• 6

• 10

If a parallelogram circumscribes a circle, then it is a:

A line intersecting a circle in two points is called a _______.

What is the relation between the radius of a circle and the length of a tangent drawn from a point outside the circle?

• They are equal

• The radius is longer

• The tangent is longer

• The tangent is longer

Mona is standing next to a tower that is 20 m tall. He notices that the length of the shadow cast by the tower on the level ground, when the Sun's altitude is 60º, is:

• 20√3 m

• 20/√3 m

• 20/3 m

• 20 m

The line segment joining the center to any point on the circle is a radius of the circle

• True

• False