Try some yourself
Using the properties of the diagonals and the tools below, can you construct a parallelogram from its diagonals?
(Hint: Draw one of the diagonals, then bisect it by selecting the line bisector tool and left-clicking on the end points of the diagonal. Now how can you draw in the second diagonal with the same midpoint?)
Try constructing a square, a rectangle, a rhombus and a kite from their diagonals.
Acknowledgements: http://www.lsp.open.ac.uk/geometry/
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