Question

"A square is a polygon made up of four line segmentso, out of which, length of three line segments are equal to the length of fourth one and all angles are right angles. "Using euclid's axiom/postulateso, justify that all angles and sides of a square are equal.

Answer 1

All the angles are equal (all right angles are equal to one another- Euclid's 4th postulate). All the sides are equal (things which are equal to the same thing are equal to one another- Euclid's 1st axiom).