unilateral ?
For both sides, bi-lateral.
Be more specific: there are too many words that could mean "side" in Latin.
A 7-sided polygon is called a heptagon. The word derived from Greek. If it derived from Latin it might be called a septagon, but that is not the case.
The Latin word for "one who is sent" is "legatus."
A nine-sided regular polygon is called a nonagon or an enneagon. The word nonagon is a hybrid-word where the prefix non- derives from Latin while the suffix -gon derives from Greek.
'In' is the Latin word for 'in', it is one of the cases where the word actually is Latin originally. For instance, 'in the city' is 'in urbe'.
'In' is the Latin word for 'in', it is one of the cases where the word actually is Latin originally. For instance, 'in the city' is 'in urbe'.
One is unus (oo-nus) in Latin.
The Latin translation for the word mysterious is Arcanum. The word secret is close in meaning and the Latin word for it is arcanus.
The correct name in English for a 7-sided polygon is "heptagon." The word "septagon" is used incorrectly by some who do not understand that the names of polygons are derived from Greek, not from Latin. The Latin word for "seven is "septem" but the Greek word is "hexa."
You could just call it a 100-gon. In English there's no word for a 100 sided polygon. in Latin, it would be centagon, using the prefix -centa meaning 100.
Biased or prejudiced.
The word 'triquetra' means triangle in the English language. The word triquetra is of Latin origin and was used to describe three-sided or cornered shapes and patterns.