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Work out the perimeter and area of 2D shapes, like squares, along with the surface area and volume of 3D shapes, like cubes.
A refresher of lesser-known shapes:
Triangle: 3 sides
Quadrilateral: 4 sides
Pentagon: 5 sides
Hexagon: 6 sides
Heptagon: 7 sides
Octagon: 8 sides
Nonagon: 9 sides
Decagon: 10 sides
Hendecagon: 11 sides
Dodecagon: 12 sides
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