Circles!

Key words

100

What is the length across the middle of a circle?

Diameter

200

What is the length around any circle?

Circumference

300

What is the length around a shape?

Perimeter

400

What is a cut off section of the shape?

Segment

500

What is a slice of the circle?

Sector

Key words and descriptions

100

Radius is half the...

diameter

200

Pi is roughly...

3.14

300

A circle sits on a line called a ...

tangent

400

Sector is...

Slice of the circle

500

Chord is...

line on the circle that doesn't touch the middle.

Circumference

100

To find the circumference, I multiply...

pi and the diameter

200

If the radius is 3cm, what is the diameter?

6cm

300

If the circumference is 8 x pi, then what is the diameter?

8cm

400

If the circumference is 12 x pi, what is the radius?

6cm

500

The radius of my circle is 4cm, what calculation would let me find the circumference?

8 x pi

Name that shape

100

I have 4 equal sides and only right angles

Square

200

I only have 1 side but no angles!

Circle

300

I have 7 sides!

Heptagon

400

I have 4 equal sides but no right angles!

Rhombus

500

I am a 12 sided regular 3D shape

Dodecahedron

Random!

100

What's the area of a 4cm square?

16cm²

200

How do you find the area of a quadrilateral?

Height times Width 

(or length)

300

What is 14 squared?

196

400

Who is famous for a²+b²=c² ?

Pythagoras

500

Me and Mr Cook share 40sweets in a ratio 1:4.
How many sweets do we each get?

I get 8 and Mr Cook gets 32 sweets.