1 2

3 4

5 6

7

3

8

9 10

11 Lock units together

12 Make 30 units andjoin 3 units in each point

13 Top view when youcut 1 cm off the top

14 Each half of each unit is joined to 2 other unitsThe other half is joined to 2 more unitsThe central points on one side of the joined units all meet in one pointTogether five units form a pentagonThe shaded areas are part of the adjacent pentagons