• <BAD + <CAD = 90°
    (2x + 5)° + (3x°) = 90°
    5x - 5 = 90°
    5x = 90 + 5
    5x = 95
    x = 95/5
    x = 19°

    <BAD = (2x + 5)°
    <BAD = 2(19) + 5
    <BAD = 38 + 5
    <BAD = 43°

    Jenis sudut = lancip, karna kurang dari 90°

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