Draw the figures below with the least number of shapes and then combine them to form an only object. For example, one solution to exercise number 12 is:
Bear in mind that the dimensions of each little box (cube) must be:
Using this box you can look at the figures from different sides to check that the solutions to the exercises of the unit are right.
Exercise 12:
(Three shapes are enough)
(Three shapes are enough)
(Five shapes are enough)
Exercise 13:
(Six shapes are enough)
(Five shapes are enough)
(Seven shapes are enough)
Exercise 14:
(Seven shapes are enough)
Exercise 15:
(Seven shapes are enough)
Exercise 16:
(Eight shapes are enough)