• a) m<A - m<B = 70°
    (3 x m<B) - m<B = 70°
    2m<B = 70°
    m<B = 70/2
    m<B = 35°
    m<A = 3 x m<B = 3 x 35 = 105°
    m<A + m<B = 105° + 35° = 140°

    b) m<A = 105°

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