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    Question

    If 45° and 65° are the angles of a triangle, then find

    the exterior angle of the third angle (remaining angle). 
    A 110° Correct Answer Incorrect Answer
    B 120° Correct Answer Incorrect Answer
    C 70° Correct Answer Incorrect Answer
    D 100° Correct Answer Incorrect Answer

    Solution

    Given angles: 45° and 65° The exterior angle is supplementary to the interior angle. So: Third angle = 180° − (45° + 65°) = 70° Exterior angle = 180° − 70° = 110°

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