\"\"

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In \"\", \ \

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Sum of the three angles is \"\".

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\"\"  \ \

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\"\"                     (Substitute \"\")

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\"\"  (Subtract \"\" from each side))   

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\"\"  (Commutative property of addition: \"\")

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\"\"                    (Additive inverse property: \"\")                                       

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\"\"                            (Additive identity property: \"\")

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\"\"                                            (Subtract: \"\")\"\"

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Given that  \"\" are angle bisectors.so \"\" \ \

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In \"\",

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\"\"

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\"\"                        (Add: \"\")

\

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\"\"                                     (Substitute  \"\" )

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\"\"                                        (Divide: \"\")

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\"\"               (Subtract \"\" from each side)

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\"\"                                 (Additive inverse property: \"\")    

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\"\"                                         (Additive identity property: \"\")   

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\"\"                                                      (Subtract: \"\")\"\"

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The option G is correct. \ \