Question: Which of the following statements is true regarding the angles formed when two lines intersect?

Options:

1. Vertical angles are always supplementary
2. Adjacent angles are always equal
3. Linear pairs are always complementary
4. Vertical angles are always equal

Correct Answer: Vertical angles are always equal

Solution:

When two lines intersect, the angles opposite each other (vertical angles) are always equal. Therefore, the correct statement is that vertical angles are always equal.