Respuesta :

mistressofdark

Sum of all angles of a triangle = 180°

So,

angle E + angle O + angle C = 180°

=> 53° + 77° + C = 180°

=> 130° + angle C = 180°

=> angle C = 180° - 130°

=> angle C = 50°

vivi1010
50 is probably the answer

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