Maths revision topics...

Properties of angles...

  • Angles in a triangle add up to 180. 
  • Angles on a streight line also add to 180. 

image: triangle with angles marked a, b, c and d (http://www.bbc.co.uk/staticarchive/ad57b13776ab9205ddcbdf37383d9892862c4f48.gif) c + d = 180 

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Corresponding and alternate...

Triangle angles (http://www.bbc.co.uk/staticarchive/5cfaf94dcaac15b8114b0a43f28427fde05664b2.gif)

a = 40° (corresponding angle to angle at point D)
 c = 40° (AB = CB, therefore angle a = angle c)
 b = 100° (angles in a triangle add up to 180°)
 e = 140° (e and c are co-interior angles)

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VOLUME...

Cube = a 3                                                                                                                                             

  • a is the side length

Rectangular prism = length x width x height

Cylinder = π x r 2 x  h

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proportion....

  • Direct = 

y = kx 

  • Inverse = 

y ∝ 1

      --

       x                =                y = k

                                                 --

                                                  x  

                    

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corbett maths links

  • proportion: 
  • https://corbettmaths.com/2013/04/04/direct-proportion/
  • volume: 
  • https://corbettmaths.com/?s=volume
  • Angle properties: 
  • https://corbettmaths.com/?s=angles
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