Steps of construction:
Step 1: Draw AB =
Step 2: With B as the centre, draw an arc of
.
Step 3: With A as the centre, draw another arc of
, cutting the previous arc at C.
Step 4: Join AC and BC.
Step 5: With C as the centre, draw an arc of 4 cm.
Step 6: With A as the centre, draw another arc of
, cutting the previous arc at D.
Step 7: Join AD and CD.
ABCD is the required rhombus.