Question

Can two acute angles be vertical, adjacent, complementary, or supplementary?

Answer 1

Two acute angles can be
vertical,
adjacent,
complementary.

They cannot be supplementary.

Explanation:

Two angles `/_A` are vertical (formed by two intersecting lines) and acute (smaller than `90^o`).

Angles `/_1` and `/_2` are adjacent (share one side) and acute.

Angles `/_a` and `/_b` are complimentary (sum of them equals to `90^o`) and acute.

Two acute angles cannot be supplementary (sum of them should equal to `180^o`) because each of them is smaller than `90^o`.