Q1
How many faces does a cube have?
ASix
BFour
CEight
DTwo
ICSEClass 7 (ICSE)MathematicsCh 17 · Topic 2
Practice and Revision - Recognition of Solids
Let us practise and revise what we learned about recognition of solids. Solid shapes, like cubes, cuboids, spheres, and cylinders, have thre
Core concept
A cube has six equal square faces, while a cuboid has six rectangular faces, not all necessarily equal.
How it works
A sphere is perfectly round in three dimensions, like a ball, with no edges or vertices.
Why it matters
A cylinder has two circular faces connected by a curved surface, like a can, while a cone has one circular face and a pointed top.
Key detail
Recognising solid shapes and their properties (faces, edges, vertices) helps us understand three-dimensional objects in our world.
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Quick notes
• Solids have length, width and height.
• A cube has six equal square faces.
• A cuboid has six rectangular faces.
• A sphere is perfectly round with no edges.
• A cylinder has two circular faces and a curved surface.
• A cone has one circular face and a point.
• Solids have faces, edges and vertices.
• Recognising solids helps understand 3D objects.