Mathematics
In figure (3) given below, ABCD is a rhombus. Find the value of x.
Rectilinear Figures
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Answer
As AD || BC, sum of co-int ∠s = 180°.
∠A + ∠B = 180°
∠B = 180° - ∠A = 180° - 72° = 108°.
The diagonals of rhombus bisect the angles.
⇒ x = 54.
Hence, x = 54.
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