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Classifying Shapes :star: (3D shapes (Regular Polyhedron 5 (Octahedron 8…

- - - - 6 sides HEXAGON
      - 7 sides HEPTAGON
      - 5 sides PENTAGON
      - 8 sides OCTAGON
      - 4 sides QUADRILATERAL
        
        If 2 pairs opposite sides are parallel = PARALLELOGRAM
        
        If right angled RECTANGLE
        
        A SQUARE is a special kind of and special kind of RHOMBUS
        
        Square rectangles
        
        oblong rectangles
        
        If all 4 sides are equal RHOMBUS
      - 9 sides NONAGON
      - 3 sides TRIANGLE
        
        Right- angled one angle is a right-angle
        
        Scalene if no sides are equal
        
        Isosceles if 2 sides are equal
        
        Acute-angled all 3 angles less than 90 deg
        
        Isosceles if 2 sides are equal
        
        Scalene if no sides are equal
        
        Equilateral if all sides equal
        
        Obtuse-angled one angle greater than 90 less than 180 deg
      - 10 sides DECAGON
        
        Irregular decagon as not all sides and angles are the same
- - - - Hexagonal prism
      - Triangular prism
      - Rectangular prism (cuboid)
    - - Hexagonal pyramid
      - Square-based pyramid
      - Triangular-based pyramid (tetrahedron)