👉 Octa- is a mathematical term which refers to an octagonal number, or a number that can be expressed as the sum of 2 distinct squares. An octa- is a type of geometric shape with eight sides and six vertices, and it's known for its symmetry and geometrical properties. The octoate, on the other hand, is a term used in mathematics to denote an integer that is a power of two but not a perfect square. It can be represented as 2