Question
(a) How many edges are there in a cylinder?
(b) How many vertices are there in a sphere?
(c) Identify the figure given below?
[3 MARKS]
(b) How many vertices are there in a sphere?
(c) Identify the figure given below?
[3 MARKS]
Answer:
:
Each part: 1 Mark
(a) Edge is defined as the line segment where two faces of a polyhedron meet. A cylinder has no such line segments. Therefore, it has 0 edges.
(b)There are no vertices in a sphere as there are no sharp corners in a sphere.
(c)The figure which has all the three dimensions, viz. length, breadth and height, equal is called a cube. Therefore, the given figure is a cube.
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:
Each part: 1 Mark
(a) Edge is defined as the line segment where two faces of a polyhedron meet. A cylinder has no such line segments. Therefore, it has 0 edges.
(b)There are no vertices in a sphere as there are no sharp corners in a sphere.
(c)The figure which has all the three dimensions, viz. length, breadth and height, equal is called a cube. Therefore, the given figure is a cube.
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