To determine which statement is true about the measure of angle \( x \), we need to understand the relationships between angles formed when parallel lines are cut by a transversal:
- Alternate interior angles are congruent.
- Corresponding angles are congruent.
- Same side interior angles are supplementary (they add up to 180°).
- Same side exterior angles are supplementary (they add up to 180°).
Based on the options you've given:
-
A. m∠x = 72° because alternate interior angles are congruent. This could be true if angle \( x \) is an alternate interior angle to a 72° angle.
-
B. m∠x = 72° because same side exterior angles are supplementary. This would be incorrect because if angles are supplementary, they cannot both equal 72°.
-
C. m∠x = 72° because corresponding angles are congruent. This could be true if angle \( x \) corresponds to a 72° angle.
-
D. m∠x = 72° because same side exterior angles are complementary. This would be incorrect because complementary angles add up to 90°, not 180°.
Without an accompanying diagram or additional context, we cannot definitively determine which of A or C is applicable. However, generally speaking:
- If \( x \) is an alternate interior angle or a corresponding angle to the same angle that measures 72°, either A or C could be correct.
Given that both options A and C could potentially be true in the right context, it would be necessary to have more information to provide a definitive answer. However, if you need only one answer and generally follow common terms, C should be the preferred statement provided that angle \( x \) behaves as a corresponding angle.
Therefore, as a generalized conclusion, C. m∠x = 72° because corresponding angles are congruent is often the explanation most directly associated with parallel lines and a transversal.