Pythagoras, perimeter, area, volume 💙

• Perimeter - all lengths of shape added together
• parts of circle

  diameter - half circle line

  radius - half of diameter

  segment - quater of circle
• area

  Square/rectangle - base x height

  Parallelogram - base x perpendicular height

  Triangle - base x perp height •/• 2

  circle - pi x radius squared

  trapezium - a + b (parallel lines )

  •\• 2, then x height
• circumference - pi x diameter
• Volume

  Cube/cuboid - length x width x height

  prism - area of cross section x length

  cylinder - area of circle x height
• Surface area - all the areas of faces of a shape added together
• pythagoras theorem -

  hypotenuse - longest angle of triangle, opposite right angle

  how to work out - h squared = a squared x b squared

  switch around formula to find a different side
• angle facts -

  interior angles - 180 - exterior angle = x

  exterior angles - 360 •\• amount of sides

  corresponding - equal

  alternate - equal

  co-interior - add up to 180

  line - 180

  triangle - 180

  square - 360

  circle - 360

  on a point - 360
• Bearings

  • go clockwise only
  • Start from north line always
  • Express as 3 figures always