Recognition of Solids
ICSE · Class 7 · Mathematics
All formulas from Recognition of Solids in ICSE Class 7 Mathematics. Key equations, constants, and identities for board exam preparation.
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Formulas
1) Basic 3D and 2D Ideas
Solid = fixed shape that occupies space
Straight line = one-dimensional figure
Rectangle = two-dimensional figure
Solid = three-dimensional figure
2) Polyhedron and Non-Polyhedron
Euler's formula: V + F - E = 2
3) Cube
Cube has V = 8, E = 12, F = 6
A cube is a cuboid with all sides equal, i.e. length = breadth = height
4) Cuboid
Cuboid has V = 8, E = 12, F = 6
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