In figure, ∠ABC = 65°, ∠BCE = 30°, ∠DCE = 35° and ∠CFE = 145°. Prove that AB || EF.
In the given figure, AB||CD, ∠ABO = 40°, ∠CDO = 35°. Find the value of the reflex ∠BOD and hence the value of x.
If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 2 : 3, then the greater of the two angles is
In Fig. 6.3, if OP||RS, ∠OPQ = 110° and ∠QRS = 130°, then ∠PQR is equal to
In Fig. 6.5, find the value of x for which the lines l and m are parallel.
In Fig.6.6, which of the two lines are parallel and why?
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