Recognition of Solids — Formula Sheet
ICSE · Class 7 · Mathematics
8 formulas from Recognition of Solids (ICSE Class 7 Mathematics) on one page, grouped by topic. Part of the ICSE Class 7 Mathematics syllabus.
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Formulas and Key Relations
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
Faces, Edges, and Vertices
Cube has V=8, E=12, F=6.
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