In a rhombus, opposite angles are equal, and the diagonals bisect the angles.
So if angle DAC = x+10
then angle DAB = 2x + 20
then 5x-10 = 2x+20
3x = 30
x = 10
USE RHOMBUS ABCD. FIND VALUE OF X, IF M DCB = 5X - 10 AND M DAC = X + 10.
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