Recognition of Solids — Practice Quiz
ICSE · Class 7 · Mathematics
Try a 4-question quiz on Recognition of Solids for ICSE Class 7 Mathematics: tap an answer to check it and see why. 54 questions in the full chapter test.
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Quick Quiz: Recognition of Solids
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A cube has 8 vertices and 12 edges. Using Euler's formula, find the number of faces.
A map uses the scale 1 cm = 100 metres. If the distance on the map is 7 cm, what is the actual distance?
A map uses the scale 1 cm = 10 km. If the distance on the map is 9 cm, what is the actual distance?
A cuboid has 12 edges and 6 faces. A cube has the same number of edges and faces. How many vertices does it have?
Sample Questions
A cylinder has 2 edges and 3 faces. How many vertices does it have?
A cone has 1 vertex and 1 edge. How many surfaces does it have?
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2
A cone has one vertex, one edge, and two surfaces: one curved surface and one plane circular surface. So it has 2 surfaces.
A cube has 6 faces. If each face is a square and all six faces are congruent, what is the main shape family of the cube?
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Polyhedron
A cube has flat polygonal faces, straight edges, and sharp corners. That makes it a polyhedron.
A cuboid has 8 vertices and 6 faces. Using Euler's formula, how many edges does it have?
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12
Euler's formula is V + F - E = 2. Substitute V = 8 and F = 6: 8 + 6 - E = 2. So 14 - E = 2, hence E = 12.
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