A. Write true if the statement is correct and false if otherwise.

__________ 1. The intersection of two lines is a point.

__________ 2. Vertical angles are congruent.

__________ 3. A complement of an angle is acute.

__________ 4. A line has length but no width and no thickness.

__________ 5. A ray has definite length.

__________ 6. Points that lie on the same line are called collinear points.

__________ 7. Angles that form a linear pair are complementary.

__________ 8. Two supplementary angles can be both obtuse.

__________ 9. Complementary angles form a linear pair.

__________ 10. Vertical angles are adjacent.