Question 30
A rhombus-shaped tile is formed by joining two equilateral triangles together. Three of these tiles are combined edge to edge to form a variety of shapes as in the example given.
How many different shapes can be formed? (Shapes which are reflections or rotations of other shapes are not considered different.)

How many different shapes can be formed? (Shapes which are reflections or rotations of other shapes are not considered different.)
