Three lines AB, CD and EF intersect each other at O. If `angleAOE` = `30^(@)` and `angleDOB = 40^(@)` (Fig. 5.51), find COF.

In the given figure, three lines AB, CD and EF intersect at a point O such that angleAOE=35^(@) and angleBOD=40^(@) . Find the measure of angleAOC, angleBOF, angleCOF and angleDOE .

Two lines AB and CD intersect at O. If angleAOC=50^(@) , find angleAOD, angleBOD and angleBOC .

straight lines AB and CD intersect at O. If angleAOC+angleBOD=130^(@) then angleAOD=?

Two lines AB and CD intersect each other at a point O such that angleAOC : angleAOD=5 : 7 . Find all the angles.

Lines PQ and RS intersect each other at point O. If /_POR:/_ROQ=5:7, find all the angles.

Two lines AB and CD intersect at O .If " /_AOC=50^(@) , find /_AOD,/_BOD and /_BOC

Two lines AB and CD intersect at point O. angleAOD : angleBOD =3:1 , then angleAOD=…………………