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2 December, 14:37

The measure of an angle is 167.4º. What is the measure of its supplementary angle?

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  1. 2 December, 17:35
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    12.6°

    Step-by-step explanation:

    Two Angles are Supplementary when they add up to 180°.

    Let x - sought angle measure.

    The equation:

    x + 167.4° = 180° subtract 167.4° from both sides

    x + 167.4° - 167.4° = 180° - 167.4°

    x = 12.6°
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