Circles Flashcards Preview

Abi Mathematics 2015 > Circles > Flashcards

Flashcards in Circles Deck (11):
1

What are the parts of a circle?

Chord
Diameter
Radius
Centre
Circumference
Tangent
Secant
Sector
Segment
Semi-circle

2

What is a chord?

A chord is a line that spans part of the width of a circle. It stops at the sides of the circle.

3

What is the diameter?

The diameter is a line that divides a circle equally in half.

4

What is the radius?

The radius is a line that goes from the centre of a circle to the outside of the circle. All radii in a circle are equal.

5

What is the centre?

The centre is the mid point of a circle.

6

What is the circumference?

The circumference is the length of the outer rim of the circle.

7

What is the tangent?

The tangent is a line that rests on the outside of a circle.

8

What is the secant?

The secant is similar to a chord, but it passes through the outer rim of the circle.

9

What is a sector?

A sector is the part of a circle that lies between two radii.

10

What is a segment?

A segment is the part of a circle that lies between the chord and the outer rim of a circle.

11

What is semi-circle?

A semi-circle is the part of a circle between the diameter and the outer rim of a circle.