The answer depends on where the points A, B, C and X are. And since you have not bothered to provide that information, I cannot provide a sensible answer.
true
its true because they have all have the same linear pair It's actually false
True
False.
Yes.
A linear pair are always supplementary, 180 degrees not 90.
false
true
its true because they have all have the same linear pair It's actually false
True , it would have been false only if it was mentioned no relationship . But as it mentions linear it is true.
The measures of two adjacent interior angles sum to 180 because they form a linear pair.B. False
True
false
False.
Yes.
No, angles that form a linear pair are supplementary.
True only if the two angles are adjacent (i.e. have a point in common). By definition, supplementary angles add up to 180° therefore they are linear pairs, if they are adjacent. Otherwise false. Imagine drawing an angle of 40° at the top of the page and another of 140° at the bottom. These angles are supplementary but not a linear pair.