Two adjacent angles of a parallelogram have equal measure. Find the measure of each of the angles of the parallelogram


We know,

Sum of adjacent angles = 180°


A + B = 180o


2A = 180o (A = B)


A = 90o


B = A = 90o


C = A = 90o (Opposite angles of parallelogram)


D = B = 90o (Opposite angles of parallelogram)


Hence, each angle of the parallelogram measures 90o


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