'All parallelograms are squares?' Do you agree with this statement?
Justify your answer with example/s.

I do not agree with this statement. Attached is a parallelogram that is not a square. It has 2 pairs of parallel lines and 4 sides (thus a parallelogram) but all 4 angles are not at 90 degrees each (thus it is not a square).

picture taken from : http://sodilinux.itd.cnr.it/sdl6x3/documentazione/xeukleides/eukleides_html/samples/parallelogram.html

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