# Parts of a Circle

In this worksheet, students learn the names of the parts of a circle.

Key stage:  KS 4

Curriculum topic:  Geometry and Measures

Curriculum subtopic:  Identify and Apply Circle Definitions and Properties

Difficulty level:

### QUESTION 1 of 10

You should know the following circle parts.

An arc is a part of the circumference.

Complete the following sentence about the parts of a circle.

 The line XY is a _____________ of the circle.
Arc

Chord

Tangent

Circumference

Complete the following sentence about the parts of a circle.

 The distance all the way round the outside of a circle is called the __________________.
Arc

Chord

Tangent

Circumference

Complete the following sentence about the parts of a circle.

 The line AB is a _____________ of the circle.
Arc

Chord

Tangent

Circumference

Complete the following sentence about the parts of a circle.

 The curved part ST of the circle is called an ________.
Arc

Chord

Tangent

Circumference

Complete the following sentence about the parts of a circle.

 The point O is the ___________ of the circle.
Centre

Diameter

Arc

Complete the following sentence about the parts of a circle.

 The line MN is a _____________ of the circle.
Centre

Diameter

Diagonal

Complete the following sentence about the parts of a circle.

 The line OP is a _____________ of the circle.
Centre

Diameter

Arc

• Question 1

Complete the following sentence about the parts of a circle.

 The line XY is a _____________ of the circle.
Tangent
• Question 2

Complete the following sentence about the parts of a circle.

 The distance all the way round the outside of a circle is called the __________________.
Circumference
• Question 3

Complete the following sentence about the parts of a circle.

 The line AB is a _____________ of the circle.
Chord
• Question 4

Complete the following sentence about the parts of a circle.

 The curved part ST of the circle is called an ________.
Arc
• Question 5

Complete the following sentence about the parts of a circle.

 The point O is the ___________ of the circle.
Centre
• Question 6

Complete the following sentence about the parts of a circle.

 The line MN is a _____________ of the circle.
Diameter
• Question 7

Complete the following sentence about the parts of a circle.

 The line OP is a _____________ of the circle.