In the figure, if AB = CD and ∠ABO = 35∘. What is the value of ∠DCO in

Question

In the figure, if AB = CD and

∠

ABO =

35^{\circ}

. What is the value of

∠

DCO in degrees?

___

Answer:
:

△

AOB and

△

DOC,
OB= OC (Radii of the same circle)
OA = OD (Radii of the same circle)
AB = CD (Given)

△

AOB

≅

△

DOC (By SSS congruence condition)
So,

∠

ABO =

∠

DCO =

35^{\circ}

(Corresponding parts of congruent triangles)

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