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Question -

In the given figure, ∠X = 62º, ∠XYZ = 54º. If YO and ZO are the bisectors of ∠XYZ and ∠XZY respectively of ΔXYZ, find ∠OZY and ∠YOZ.



Answer -

As the sum of all interiorangles of a triangle is 180º, therefore, for ΔXYZ,

∠X + ∠XYZ + ∠XZY =180º

62º + 54º+ ∠XZY =180º

∠XZY = 180º − 116º

∠XZY = 64º

∠OZY = = 32º (OZ is the anglebisector of ∠XZY)

Similarly,∠OYZ= = 27º

Usingangle sum property for ΔOYZ, we obtain

∠OYZ + ∠YOZ + ∠OZY =180º

27º + ∠YOZ + 32º = 180º

∠YOZ = 180º − 59º

∠YOZ = 121º

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