Solid Shapes


Exercise 15.1

Question 1: Identify the nets which can be used to make cubes.

net of cube net of cube net of cube net of cube net of cube net of cube

Answer: (ii), (iii), (iv) and (vi)


Question 2: Dice are cubes with dots on each face. Opposite faces of a die always have a total of seven dots on them. Insert suitable numbers in the blanks, remembering that the number on the opposite face should total to 7.

net of dice net of dice

Answer:

net of dice net of dice

Question 3: Can this be a net for a die? Explain your answer.

net of dice

Answer: No, because 4 is opposite 1 and 3 is opposite 6 and they do not add up to 7.


Question 4: Here is an incomplete net for making a cube. Complete it in at least two different ways. Remember that a cube has six faces. How many are there in the net here?

net of dice

Answer:

net of dice net of 3 D shape

Question 5: Match the nets with appropriate solids.

Column IColumn II
(a)net of 3 D shape(1)net of 3 D shape
(b)net of 3 D shape(2)net of 3 D shape
(c)net of 3 D shape(3)net of 3 D shape
(d)net of 3 D shape(4)net of 3 D shape

Answer: (a) → 2, (b) → 3, (c) → 4, (d) → 1



Copyright © excellup 2014