Question

If the angle of a quadrilateral are equal, prove that it is a rectangle.​

Answer 1

Answer:

let ABCD a parallelogram

to prove ABCD is a rectangle

in ∆ABC and ∆DCB

AB= DC (opposite sides of parallelogram are equal)

BC=BC ( common)

AC= DB ( given)

therefore,

∆ABC is congruent to ∆DBC (sss congruent rule)

hene prove

hope it helps u thanks