a.Yes, if the intersecting lines form two 45° angles as vertical angles, then they are also complementary as they add up to 90°.

b.Yes, if the intersecting lines are perpendiclar then the vertical angles are also supplementary as they add up to 180°.

c.No, two complementary angles have a sum of 90° while two supplementary angles have a sum of 180°. This cannot happen at the same time.

b.Yes, if the intersecting lines are perpendiclar then the vertical angles are also supplementary as they add up to 180°.

c.No, two complementary angles have a sum of 90° while two supplementary angles have a sum of 180°. This cannot happen at the same time.