Question

Name the parallelogram having all sides equal and measure of each angle is 90°.​

Answer 1

Square

Square is the parallelogram having all sides equal and measure of each angle is 90°.

Answer 2

Answer:

Square is the parallelogram having all sides equal and measure of each angle is 90°.

Figure:

$\setlength{\unitlength}{2mm}\begin{picture}(10,10)\linethickness{0.5mm}\put(6,2){\dashbox{0.01}(15,15)}\put(3,0){\bf D}\put(3,18){\bf A}\put(23,18){\bf B}\put(23,0){\bf C}\end{picture}$

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NOTE: See the answer in website for figure.