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Exercise 7A

21 st
1. Complete the following table. Century #Computational Thinking
Skills

object Shape number of number of number number of number of
faces plane faces of curved edges vertices
faces

a. Cuboid

b.

c.

d.

2. Answer the following questions:
a. Is a cube a cuboid? ___________

b. Is a cuboid a cube? ___________

c. Are all the edges of a cuboid equal? ___________
d. Are all the edges of a cube equal? ___________

e. Does a cylinder have any straight edge? ___________

f. How many corners are there in a cone? ___________
g. How many plane faces does a cylinder have? ___________

3. Write the names of two objects that have the following shapes: (a) cylinder (b) cone.

4. Identify the shape of the solid shown here. What shape will you get if you join
two such solids face to face?

5. Circle the shape which is a combination of the given shapes.

a. or

b. or

c. or

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Geometry