Circle

Question 1

Radius

Answer 1

The distance from the centre of a circle to the outer rim

Question 2

Chord

Answer 2

A line segment whose endpoints are on a circle.

Question 3

Diameter

Answer 3

A chord that passes through the center of the circle. The length of a diameter is two times the length of a radius.

Question 4

Tangent

Answer 4

A straight line that touches the curve surface at a point

Question 5

Arc

Answer 5

A portion of the circumference of a circle.

Question 6

Segment

Answer 6

The division of a chord

Question 7

Sector

Answer 7

A portion of a circle which resembles a pizza slice.

Question 8

What is the rough calculation of pi (π)

Answer 8

3.14

22/7

Question 9

The formula to calculate pi (π)

Answer 9

Circumference/diameter

2 x π x radius

Question 10

What is the formula to calculate the circumference?

Answer 10

C= πxd