Please enable JavaScript.

Coggle requires JavaScript to display documents.

Maths - Coggle Diagram

- - - - Shoes were £100 and now are £125, what was the percentage increase
        
        125 ÷ 100 = 1.25
        
        Percentage increase was 25%
      - Shoes were £100 and now are £80, what was the percentage decrease
        
        80 ÷ 100 = 0.8
        1 - 0.8 = 0.2
        
        Percentage decrease was 20%
  - - - Percentage multiplier for increase
        52 = 1.52
        6 = 1.06
        93 = 1.93
        1 + (percentage ÷ 100)
        
        Increase 100 by 25%
        
        100 x 1.25
      - Percentage multiplier for decrease
        52 = 0.48
        6 = 0.94
        93 = 0.07
        1 - (percentage ÷ 100)
        
        Decrease 100 by 25%
        
        100 x 0.85
  - - - 16% of my original number is 20, what is my original number
        
        16% = 20
        1% = 1.25
        100% = 125
  - - - 20% of 60
        
        20 x 60 = 1200
        1200 ÷ 100 = 12
- - - - l x w x d
    - - l x w x d
    - - Triangular prism
        
        area of triangle x depth
      - Hexagonal prism
        
        area of hexagon x depth
      - Cylinder
        
        area of circle x depth
  - - - A closed shape that has a finite amount of sides, all straight
        
        Triangle
        
        base x perpendicular height ÷ 2
        
        Types of triangles
        
        Isoceles
        
        Two angles are equal
        
        Equilateral
        
        All angles and sides are the same
        All angles are 60 degrees
        
        Right angle triangle
        
        Pythagoras theorem
        
        a² + b² = c²
        
        Pentagon
        
        Hexagon
        
        Square
        
        length x width
        
        all angles are 90 degrees
        
        Parallelogram
        
        opposite angles are equal
        
        angles on the same side are co interior
        
        Rhombus
        
        base x perpendicular height
        
        opposite angles are equal
        
        all sides are equal
        
        Heptagon
        
        Octogon
        
        Nonogon
        
        Decagon
        
        Trapezium
        
        0.5 x (a + b) x perpendicular height
      - Rules
        
        Calculate what all the angles add up to inside a polygon
        
        (n-2) x 180
        n = number of sides
        
        Calculate what 1 angles is in a polygon
        
        ((n-2) x 180) ÷ n
        n = number of sides
        
        Interior angles and exterior angles equal 360 degrees
    - - A closed shape that has 4 sides
      - All angles add up to 360 degrees
    - - Infinite amount of sides
      - π x radius x radius
    - - (π x radius x radius) ÷ 2
  - - - three dimensions to the shape
    - - a point where two or more edges meet
    - - a line on the boundary joining two vertex
    - - a flat surface of an object
    - - a view inside a solid shape made by cutting through it
    - - a drawing of something from above
    - - a way to give illustration to a 3D shape when drawn on a flat surface
    - - two dimensions to the shape