In the given figre, AB = AC and OB = OC. Then, `angleABO:angleACO=?`

In the given figure, AB11 CD. If angleABO = 130^@ and angleOCD = 110^@ , then angle BOC is equal to

In the given figure, OC.OD = OA.OB Show that : angle A = angle D " and " angle C = angle B.

In the given figure, AC= AB and angleABC= 72^(@) . OA and OB are two tangents. Determine: angle subtended by the chord AB at the centre.

In the given figure, AC= AB and angleABC= 72^(@) . OA and OB are two tangents. Determine: angleAOB

In the given figure, if OC=9cm and OB=15cm the value of OB+DB=____.

In the given fig., AB || DC and diagonals AC and BD intersects at O. If OA =3x-1 and OB =2x + 1, OC = 5x-3 and OD =6x-5, find the value of x.

If AB and CD are intersecting at ‘O’, OA = OB and OD = OC. Show that triangle AOD ~= triangle BOC

In the adjoining figure BO and CO are the bisectors of angleCBD and angleBCE respectively. If AC gt AB , prove that OB gt OC .