In triangle ABC, if angleA + angleB = 65? and angleB + angleC = 140? , find the measures of all angles in the triangle.

Dear Student,

We know that,    A + B +C = 180°  Angle sum proppertyA + B + C = 180°65° + C = 180°C =180° - 65° = 115°now,B +C = 140°B +115° = 140°B = 140° - 115° = 25°Now,A + B = 65°A + 25° = 65°A = 65° - 25° = 40

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