This is how i got the figure:
Steps of Construction.
1. Draw a line segment AC of any length and from A, draw 30 degree angle upwards and downwards (from the same point).
2. Extend both the lines and you will get the total angle of one side as 60 degree (30+30=60)
3. From point A, take 5cm on compass and mark it on the 30 degree arm both up and down.
4. Name the points as B and D respectively.
5. Now from point B and D, cut a 5 cm arc. The two arcs will intersect at point C
6. Join AB, BC,CD and DA.
This is rhombus ABCD.