Page 272 - Start Up Mathematics_7
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Viewing Different Sections of a Solid
A 3-D object has a 2-D section. A solid object can be viewed in different ways. One way is finding
the cross-section by cutting or slicing and another method is by studying the shadow it casts on
the screen.
Cross-section by slicing
Take a loaf of bread. It is like a cuboid. If
a vertical cut is made along the breadth, a
square is obtained. This square is known as
cross-section of the bread.
If a horizontal cut is made along the length,
the cross-section so obtained is a rectangle.
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