Coplanar lines are <u>lines</u> that lie on the same <u>plane</u>.
Theorem: If two <u>coplanar lines</u> are <u>perpendicular</u> to the same line, then the two lines are <u>parallel</u> to each other.
This theorem is true always, therefore, given statement is true always.
Answer: correct choice is A
Answer:
okay , attach a file .
Step-by-step explanation:
Alternate interior angles are equal, thus the given alternate interior angle is 80 degrees.
Therefore, x = 80 - 15 = 65 degrees.