In a plane, if a line is perpendicular to one of two parallel lines, then it is perpendicular to the other line also.
Select one:
a. Same Sides Interior Angles Theorem
b. Alternate Exterior Angles Theorem
c. Corresponding Angles Postulate
d. Perpendicular Transveral Theorem
e. Alternate Interior Angles Theorem
f. Parallel Lines
g. Perpendicular Lines

The definition provided in the question refers to the Perpendicular Transversal Theorem about lines, as stated in option D and further explained below.

What is the Perpendicular Transversal Theorem about?

Imagine we have two parallel lines in a plane. Now, we draw another line that is perpendicular to one of them. According to the Perpendicular Transversal Theorem, this line will be perpendicular to both lines, since they are parallel.

The explanation above is the same as the definition provided in the question. Therefore, we can conclude that the correct answer is Perpendicular Transversal Theorem, option D.

Learn more about parallel lines here:

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