Page 142 - Start Up Mathematics_1
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Solid Shapes
Look at the given figures.
This is a square. It is flat. It has no thickness.
This is a dice. It is not flat. It is a solid shape. Six squares join
together to form this shape. Each square is a face of the dice. face
Thus, it has 6 faces. The place where 2 faces join is called an edge
edge. Thus, it has 12 edges.
This is a Cube. 8 corners
It has six flat square faces. 6 flat
faces
It has twelve straight edges.
It has eight corners. 12 edges
This is a Cuboid. 8 corners 6 flat faces
It has six flat faces.
It has twelve edges.
It has eight corners.
12 edges
This is a CONE. 1 corner
(vertex)
It has one flat face and one 1 curved
curved face. face 1 edge
It has one edge.
It has one corner which is called vertex.
1 flat face
This is a CYLINDER. edge flat
It has two circular flat faces. face
It has one curved face. 1 curved
face
It has no corners.
It has 2 edges. flat face
edge
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