All the angles of a quadrilateral are equal. What special name is given to this quadrilateral ? -Maths 9th

All the angles of a quadrilateral are equal. What special name is given to this quadrilateral ? -Maths 9th
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We know that, sum of all angles in a quadrilateral is 360°. If ABCD is a quadrilateral, ∠A+ ∠B+ ∠C + ∠D = 360° …(i) But it is given all angles are equal. ∠A = ∠B = ∠C = ∠D From Eq. (i) ∠A + ∠A + ∠A + ∠A = 360° ⇒ 4 ∠A = 360° ∠A = 90° So, all angles of a quadrilateral are 90°. Hence, given quadrilateral is a rectangle.
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