Parts of a Circle Aim 1 To understand

Circumference The circumference of a circle is the distance around the outside of a

Chord A chord is a line touching the circumference of the circle at two

An arc is the part of the circumference at the edge of a sector

A segment is the part of a circle between a chord an arc Segment

Copy the two diagrams carefully into your book Label your two diagrams using the

Match up the word with the correct definition. Radius Chord The part of a

π This is Pi The value of Pi (π) is 22/7 or 3. 14159265359

In our next Power. Point, we will learn how to calculate the circumference of

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Parts of a Circle Aim: 1. To understand know the vocabulary for parts of a circle 2. To recognise the symbol π and know its value.

Circumference The circumference of a circle is the distance around the outside of a circle Diameter The diameter of the circle is the distance from one side to the other passing through the centre of the circle

Chord A chord is a line touching the circumference of the circle at two points Radius The radius is the line connecting the centre of the circle and the circumference

An arc is the part of the circumference at the edge of a sector A sector is the part of a circle between two radii and an arc Sector Arc

A segment is the part of a circle between a chord an arc Segment A tangent is a straight line which touches a circle at one point only Tangent

Copy the two diagrams carefully into your book Label your two diagrams using the words below Radius Diameter Sector Tangent Arc Circumference Segment Chord

Match up the word with the correct definition. Radius Chord The part of a circle between two radii and an arc Diameter Arc A straight line which touches a circle at one point only Segment Circumference Sector Tangent Part of the circumference at the edge of a sector The distance around the outside of a circle The part of a circle between a chord an arc The distance from one side to the other passing through the centre of the circle A line touching the circumference of the circle at two points The line connecting the centre of the circle and the circumference

π This is Pi The value of Pi (π) is 22/7 or 3. 14159265359 but we round this down to 3. 14. This symbol is a very old symbol and dates back to a Greek mathematician called Archimedes.

In our next Power. Point, we will learn how to calculate the circumference of a circle using Pi (π). We will also learn how to construct a circle so have a ruler, pencil and compass ready. In the meantime, continue practicing table skills, complete work assigned on school website and log into mangahigh to complete assignments set there!