Question

In a quadrilateral, all its angles are equal. Find the measure of each angle.

Answer 1

let the required angle be x
sum of angles in a quadrilateral=360
x+x+x+x=360
           4x=360
             x=360/4
             x=90
therefore each angle measuers 90°

Answer 2

given : all angles are equal in a quadrilateral
required to be proved : measure of each angle 
solution :
let each angle be " x " because all the angles are equal
the sum of the angles of the quadrilaterals is 360 
 x + x + x + x = 360°
4x = 360°
x = 360° / 4
∴ x = 90°
the measure of each angle in the quadrilateral is 90°
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