In the given figure, l∥m and t is transversal. If ∠1 and ∠2 are in the ratio 5:7, find the measure of each of the angles∠1,∠2,∠3 and ∠8.
If ∠1+∠2=180,then land mare ___________.
In the figure given below, identify the exterior angles.
(A) 1, 2, 7, 8. (B) 1, 2, 5, 7. (C) 3, 2, 5, 6. (D) 3, 4, 8, 7. (1 mark)
If ∠1=∠2,then the line land mare