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6 June, 17:17

what is the measure, in degrees, of the missing angle in the triangle below? (Angle Q is 39 degrees, angle R is 66 degrees, and angle S is unknown.)

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  1. 6 June, 17:28
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    75°

    Step-by-step explanation:

    sum of angles of a triangle=180°

    ∠Q+∠R+∠S=180°

    39+66+∠ S=180°

    105+∠S=180

    ∠S=180-105=75 °
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