In the figure below, AB || DE and BC || FD.Find ∠FDE, given that ∠ABC = 30°.
Explanation:
Let us draw a line CG parallel to DE.
∠ABC = ∠GCB = 30° [alternate interior angles since AB || GC]
Now, since FD || BC and DE || DF, ⇒ ∠FDE = ∠BCG = 30°
Hence, option (c).
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