In the given figure, l ∥ m and t is a transversal. If \angle 5=70^{\circ}, find the measure of each of the angles
∠1, ∠3, ∠4 and ∠8.
Two parallel lines l and m are cut by a transversal t. if the interior angles of the same side of t be (2 x-8)^{\circ} \text { and }(3 x-7)^{\circ}, find the measures of each of these angles.
In the given figure, l ∥ m, if s and t be transversals such that s is not parallel to t, find the values of x and y.
In the adjoining figure, it is being given that AO ∥ CD, OB ∥ CE and ∠AOB = 50^{\circ}. Find the measure of ∠ECD.
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