In the following figure, `angleACD` is an exterior angle of `DeltaABC` . `angleB = 40^@ , angleA = 70^@`. Find the measure of `angleACD`.

In the givne figure , anglePRS is the exterior angle of DeltaPQR . If angleP=55^(@) and angleQ=64^(@) , then find anglePRS .

In DeltaABC,angleBAC=120^(@) and AB = AC, then find measure of angleABC .

angle ACD is the exterior angle of DeltaABC. The measures of angle A and angleB are equal. If mangleACD=140^@ , find the measures of angleA and angleB

The measures of angles of a triangle are x^@ , (x - 20)^@ and (x-40)^@ . Find a measure of each angle.

The measure of angleA and angleB of an isosceles DeltaABC are equal. angleACD is the exterior angle of DeltaABC . The measures of angleACB and angleACD are (3x-17)^@ and (8x+10)^@ respectively. Find the measures of angleACB and angleACD . Also, find the measures of angleA and angleB .