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6.In a AABC,LA +ZB = 65°,2B + 2C = 140°. Findthemeasure ofeach angle ofthetriangle.

Answer»

sum of angle of triangle should be 180°

=> A+B+C = 180°=> 65° +C = 180°..... ( A+B = 65°)=> C = 180°-65° = 115°

now angle B +C = 140°=> B = 140° -C = 140-115 = 25°

so angle A = 65-B = 65-25 = 40°

sukriya..


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