Maths

Maths

1. angle properties

   • straight line=180
   • at a point=360
   • vertically opp are equal
   • alternate interior/exterior are equal
   • corresponding are equal

2. regular polygon

   • sum of interior angles = (n+2)x180 *if only one angle then divide by n
   • sum of ext = 360

3. shapes

4. congruent figures

   • SSS
   • RHS
   • AAS
   • SAS

5. bearings

   • measure clockwise from north direction
   • both sides on a straight line with bearing=180

6. proportion

   • direct : y=kx
   • inverse : y=k/x

7. graph

   • gradient : rise/run
   • eq of line : y= mx+c
   • perpendicular: m1 x m2=-1

8. cirlces

   • arc length
     • degree
     • radian
   • area of sector
     • degree
     • radian

9. trigonometry

   • right-angled tri. : TOA CAH SOH
   • REMEMBER!!
   • in formula list

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