Corollary

[kawr-uh-ler-ee, kor-; especially British, kuh-rol-uh-ree] /ˈkɔr əˌlɛr i, ˈkɒr-; especially British, kəˈrɒl ə ri/

noun, plural corollaries.
1.
Mathematics. a proposition that is incidentally proved in proving another proposition.
2.
an immediate consequence or easily drawn conclusion.
3.
a natural consequence or result.
/kəˈrɒlərɪ/
noun (pl) -laries
1.
a proposition that follows directly from the proof of another proposition
2.
an obvious deduction
3.
a natural consequence or result
adjective
4.
consequent or resultant
n.

late 14c., from Late Latin corollarium “a deduction, consequence,” from Latin corollarium, originally “money paid for a garland,” hence “gift, gratuity, something extra;” and in logic, “a proposition proved from another that has been proved.” From corolla “small garland,” diminutive of corona “crown” (see crown (n.)).
corollary
(kôr’ə-lěr’ē)
A statement that follows with little or no proof required from an already proven statement. For example, it is a theorem in geometry that the angles opposite two congruent sides of a triangle are also congruent. A corollary to that statement is that an equilateral triangle is also equiangular.