Question

prove if the angles of a quadrilateral are equal it is a rectangle

Answer 1

It is easy to tell that sum of all the angles is equal to 360°,in rectangle,sqare all the angles are equal,
But sides are different.
same as in quadrilateral sides are different as two are equal sides that the same sides are equal.
in that case of quadrilateral if angles are equal then it becomes rectangle.


Hence proved

Answer 2

If all angle of quadrilateral is equal each angle will 90 obviously. so,it will form a square of rectangle and squarenis also a form of rectangle. hence proved... Hope it helps