Bo is the middle line on the hypotenuse of right triangle ABC, extend Bo to point D, make Bo = do, connect ad CD, prove that quadrilateral ABCD is a rectangle

Bo is the middle line on the hypotenuse of right triangle ABC, extend Bo to point D, make Bo = do, connect ad CD, prove that quadrilateral ABCD is a rectangle

Because: Bo is the center line on the hypotenuse of the right triangle ABC
So, Ao = Co
And because Bo = OD
(diagonals bisect each other)
A quadrilateral ABCD is a parallelogram
And because angle B is a right angle
So, the quadrilateral ABCD is a rectangle

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