In the figure above ,AD=AC=BD. The point B, D and C are collinear. If `angleCAD=80^(@)`, then find `angleDAB`.

In the given figure of AD = CB then prove that AC = BD

In Fig. AC and AD are tangent to a circle at C and D respectively. If angleBCD = 44^(@) , then find angleCAD, angleADC, angleCBD and angleACD .

In the figure, AC=20 , CB=15 , AD=24 . Find AB and BD .

In given figure AD = BC then AC and BD are equal or not?

A cyclic quadrilateral ABCD is such that AB=BC,AD=DC and AC and BD intersect at O. If angleCAD=46^@ , then the measure of angleAOB is equal to:

In the figure, bar(DC)" || "bar(AB) . If angleACB=40^(@) and angleCAD=30^(@) , AC is the bisector of angleDAB , then find the angle of angleADC .

In the figure, AD = BC and BD = CA. Prove that angleADB = angleBCA and angleDAB = angleCBA .

Prove that the points (a, b), (c, d) and (a-c, b-d) are collinear, if ad = bc.