complementary
//ˌkɒm.plɪˈmen.tər.i//
Adjective
complementaryCanonical form
more complementaryComparative
most complementarySuperlative
1
Combining in such a way as to enhance or emphasize the qualities of each other or another.
The two colors are complementary and look beautiful together.
2
Forming a complement; completing or making whole.
Their skills are complementary, making them an effective team.
3
(Of two angles) Adding up to 90 degrees.
A 30-degree angle and a 60-degree angle are complementary.