cytosine and guanine
adenine and guanine
yes
true
A linear pair are always supplementary, 180 degrees not 90.
it is true to some extent. The DNA bases are Adenine(A), Thymine(T), Cytosine(C) and Guanine(G). Now the reason i say it is true is because A forms a double hydrogen bond with T only and C forms a triple hydrogen bond with G only.
True
True
True
Yes it is true that angles that add up to 90 degrees are said to be complementary
true
True.
true