Posted by m.d. on Wednesday, August 3, 2011 at 6:44am.
180-44=136 degrees
The diagonals of a rectangle produce pairs of isosceles triangle.
So triangle BOC is isosceles, and each of the base angles must be 68°
(68+68+44=180)
since angles BCO and OAD are alternate angles for parallel lines,
angle OAD = 68°
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