Welcome to the second of our Medium level Eleven Plus maths quizzes on shapes. In the last one we tested you on triangles. In this one, we will ask you some questions on the properties of circles.
Circles are one of the most common shapes you will encounter – both in maths lessons and in real life. They are not like polygons, such as squares or triangles. Circles have their own terms and their own formulae for working out things like circumference, area, diameter and more!
One thing you need to know is π. This is the Greek letter pi, pronounced the same as Pie.
If you can get all ten questions right in this quiz, well done! You certainly know your circles. Why not try the rest of our quizzes on shapes? Keep playing them until you can get every answer in every quiz right first time. If you can do that then your knowledge of shapes is most definitely in shape!
1.
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Which one of the following statements is incorrect? |
|
[ ] |
The distance around the outside of a circle is called the perimeter |
[ ] |
A circle is a round, 2-D shape that looks like a letter ‘O’ |
[ ] |
A straight line from the centre of a circle to its edge is called the radius |
[ ] |
The distance around the outside of a circle is called the circumference |
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2.
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What is the formula to calculate the circumference of a circle? |
|
[ ] |
Π x radius |
[ ] |
Π x diameter |
[ ] |
Π x radius2 |
[ ] |
Π x diameter2 |
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3.
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Which one of the following statements is incorrect? |
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[ ] |
All the points on the edge of a circle are the same distance from its centre |
[ ] |
A tangent is a straight line that touches a single point on the edge of a circle |
[ ] |
All the points on the edge of a circle are the same distance from one another |
[ ] |
A sector is the part of a circle between two radii (plural of radius) and its edge |
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4.
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Which one of the following statements is correct? |
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[ ] |
The full arc of a circle measures 90o |
[ ] |
The full arc of a circle measures 180o |
[ ] |
The full arc of a circle measures 270o |
[ ] |
The full arc of a circle measures 360o |
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5.
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We use a Greek letter π to help us work formulae for circles. What is its name? |
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[ ] |
Pi |
[ ] |
Alpha |
[ ] |
Phi |
[ ] |
Gamma |
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6.
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What does the following formula tell us about a circle?
Πr2 |
|
[ ] |
Its circumference |
[ ] |
Its area |
[ ] |
Its diameter |
[ ] |
Its volume |
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7.
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What do we call a line which joins two points on the edge of a circle but does not pass through its centre? |
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[ ] |
Diameter |
[ ] |
Sector |
[ ] |
Chord |
[ ] |
Arc |
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8.
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What is the name of a shape that forms half a circle? |
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[ ] |
A moon |
[ ] |
A hemi-circle |
[ ] |
A demi-circle |
[ ] |
A semi-circle |
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9.
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Which one of the following statements is incorrect? |
|
[ ] |
An oval shape is known as an ellipse |
[ ] |
A circle has the shortest perimeter (circumference) possible for a shape with the same area |
[ ] |
A circle has infinite lines of symmetry |
[ ] |
A circle has a longer perimeter (circumference) than a square with the same area |
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10.
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What is the value of π to four decimal places? |
|
[ ] |
3.1425 |
[ ] |
3.1415 |
[ ] |
3.1416 |
[ ] |
3.1419 |
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1.
|
Which one of the following statements is incorrect? |
|
[x] |
The distance around the outside of a circle is called the perimeter |
[ ] |
A circle is a round, 2-D shape that looks like a letter ‘O’ |
[ ] |
A straight line from the centre of a circle to its edge is called the radius |
[ ] |
The distance around the outside of a circle is called the circumference |
|
|
2.
|
What is the formula to calculate the circumference of a circle? |
|
[ ] |
Π x radius |
[x] |
Π x diameter |
[ ] |
Π x radius2 |
[ ] |
Π x diameter2 |
|
|
3.
|
Which one of the following statements is incorrect? |
|
[ ] |
All the points on the edge of a circle are the same distance from its centre |
[ ] |
A tangent is a straight line that touches a single point on the edge of a circle |
[x] |
All the points on the edge of a circle are the same distance from one another |
[ ] |
A sector is the part of a circle between two radii (plural of radius) and its edge |
|
|
4.
|
Which one of the following statements is correct? |
|
[ ] |
The full arc of a circle measures 90o |
[ ] |
The full arc of a circle measures 180o |
[ ] |
The full arc of a circle measures 270o |
[x] |
The full arc of a circle measures 360o |
|
|
5.
|
We use a Greek letter π to help us work formulae for circles. What is its name? |
|
[x] |
Pi |
[ ] |
Alpha |
[ ] |
Phi |
[ ] |
Gamma |
|
|
6.
|
What does the following formula tell us about a circle?
Πr2 |
|
[ ] |
Its circumference |
[x] |
Its area |
[ ] |
Its diameter |
[ ] |
Its volume |
|
|
7.
|
What do we call a line which joins two points on the edge of a circle but does not pass through its centre? |
|
[ ] |
Diameter |
[ ] |
Sector |
[x] |
Chord |
[ ] |
Arc |
|
|
8.
|
What is the name of a shape that forms half a circle? |
|
[ ] |
A moon |
[ ] |
A hemi-circle |
[ ] |
A demi-circle |
[x] |
A semi-circle |
|
|
9.
|
Which one of the following statements is incorrect? |
|
[ ] |
An oval shape is known as an ellipse |
[ ] |
A circle has the shortest perimeter (circumference) possible for a shape with the same area |
[ ] |
A circle has infinite lines of symmetry |
[x] |
A circle has a longer perimeter (circumference) than a square with the same area |
|
|
10.
|
What is the value of π to four decimal places? |
|
[ ] |
3.1425 |
[ ] |
3.1415 |
[x] |
3.1416 |
[ ] |
3.1419 |
|
|