Drawmetry.com

A rhombus is a parallelogram whose sides are of equal length.

1. Add a new document
2. Enter Insert Line mode by clicking on the Insert Line button on the Drawing tool bar.
3. Draw a quadrilateral. Click once on the canvas to exit Insert Line mode.
4. Select one of the point variables (e.g., P_3) and add the constraint "=parallel(P_0, P_1, P_2) and parallel(P_2, P_1, P_0), which puts P_3 on a line through P_0 parallel to the line through P_1 and P_2 and on a line through P_2 parallel to a line through P_1 and P_0. This turns the quadrilateral into a parallelogram.
5. Select the point opposite to P_3 (i.e., P_1) and add the constraint "=equidistant(P_0, P_2)". This turns the parallelogram into a rhombus.
6. Save the document as rhombus_1.svg in the Basic Shapes folder.