Find the measurement of `/_ABC`

ABCD is a parallelogram,if the two diagonals are equal,find the measure of /_ABC.

In the given figure,ABC and AED are straight linnes.AB is the diameter of the smaller circle ABE.Find the measure of /_ACD.

In the figure, ray BC is tangent at point B and ray BA is secant. /_ABC intercepts are AXB if m(arc AXB ) = 130^(@) then find the measure of /_ABC .

In the figure, O is the centre of the circle , /_ BAC = 80^(@) , m ( arc APC ) = 60^(@) then find the measure of (i) /_ABC (ii) arc BQC

In ABC, if bisectors of /_ABC and /_ACB intersect at O at angle of 120^(@), then find the measure of /_A

In the angles A,B and C of a ABC satisfy the relation B-A-B, then find the measure of /_B

ABC is right angled at B .On the side AC a point D is taken such that AD=DC and AB=BD. Find the measure of /_CAB

In the figure given, angle BAC : angle ABC = 2:3. Find the measure of angleABC .

In triangle ABC , angleABC = 90^@ , angle CAB = x^@ , tan x^@ = 3/4 and BC = 15 cm . Find the measures of AB and AC.

Find the measure of angle ABC (in degrees) in the parallelogram ABCD as shown in the given figure: