Geometry Questions and Solutions6) If two angles of a triangle are 48^{o} and 72^{o}, what is the value of the third angle? The total angle of a triangle = 180^{o} Therefore the sum of the other two angles must be subtracted from 180^{o} = 180^{o}  (48^{o }+ 72^{o}) 180^{o}  120^{o} = 60^{o}

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