# Maths

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• Created by: jorgiaa
• Created on: 23-04-14 18:20
What is the HCF?
The highest common multiple of two numbers is the highest number that is a factor of both numbers
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What is the LCM?
The lowest common multiple of two numbers is the lowest number that is a multiple of both numbers
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What are prime numbers?
A number that can only be divided by itself and 1 eg. 2,3,5,7,11,13,17,19,23,29
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What are factors?
The factors of a number are any whole numbers that divide into it exactly. 1 and the number itself are both factors of any number.
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What is the formula for the area of a triangle?
Base x height divided by 2
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What is the equation on a straight line graph?
y=mx+c
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What is an acute angle?
An angle less then 90 degrees
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What is a right angle?
An angle which is 90 degrees
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What is an obtuse angle?
An angle between 90 and 180 degrees
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What is a reflex angle?
An angle more than 180 degrees
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Bearings are always measured...
Clockwise from north
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What is a line of symmetry?
A mirror line
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Any 4 sided shape
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What is a congruent shape?
2 shapes that are exactly the same shape and size
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how do you work out the perimeter of a shape?
add all the lengths of the sides together
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How do you work out the circumference of a circle?
c= pie x d
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How do you work out the area of a circle?
A= pie x r squared
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## Other cards in this set

### Card 2

What is the LCM?

#### Back

The lowest common multiple of two numbers is the lowest number that is a multiple of both numbers

### Card 3

#### Front

What are prime numbers?

### Card 4

#### Front

What are factors?

### Card 5

#### Front

What is the formula for the area of a triangle?