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2 August, 08:41

Which correctly describes how to determine the measure of angle 1? Which correctly describes how to determine the measure of angle 1?

A. The 105° angle and angle 2 are alternate exterior angles so angle 2 must measure 105°. Angles 1 and 2 are supplementary angles so angle 1 must measure 75°.

B. The 105° angle and angle 2 are corresponding angles so angle 2 must measure 105°. Angles 1 and 2 are supplementary angles so angle 1 must measure 75°.

C. The 105° angle and angle 2 are alternate exterior angles so angle 2 must measure 75°. Angles 1 and 2 are supplementary angles so angle 1 must measure 105°.

D. The 105° angle and angle 2 are corresponding angles so angle 2 must measure 75°. Angles 1 and 2 are supplementary angles so angle 1 must measure 105°.

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Answers (1)
  1. 2 August, 09:12
    0
    (A) if 105° angle and angle 2 are alternate exterior angle, angle 2 must measure 105°. angle 1 and 2 are supplementary angles, the angle 1 must measure 75°

    (B) if 105° angle and angle 2 are corresponding angles, angle 2 must measure 105°. angle 1 and 2 are supplementary angles, the angle 1 must measure 75°

    Step-by-step explanation:

    A. supplementary angle are angles on a straight line which measure 180°

    Hence, angle 1 + 105° = 180°

    thus, angle 1 = 180° - 105° = 75°

    (B) the calculation at A. above is applicable to B.
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