Question

lf three angles of a quadrilateral are 90° each, show that the given quadrilateral is a rectangle​

Answer 1

All the four angles of the quadrilateral are 90°

That itself proves the question....

Answer 2

Answer:

sum of interior angles of a quadrilateral is 360

given 3 angles are 90

let the other angle be x

90+90+90+x=360

x=360-27

x=90

so it is a rectangle as all the four angles are 90 degrees

but actually to say it need not be only a rectangle it can be a square also as it is not mentioned anything about sides