1) Cuneus 2) Multilateral 3) Scalene 4) Triangle 5) Trigon 6) Tripartite 7) Wedge 1) Having three sides 2) Involving three parties 3) Like Nafta 4) Many-sided 5) Multilateral 6) Three-party 7) Three-sided 8) Three-way 9) Triangular 10) Tripartite 
• (a.) Having three sides; being three-sided; as, a trilateral triangle.
Type: Term Pronunciation: tri-lat′ĕr-ăl Definitions: 1. Having three sides.
[adj] - having three sides
trilateral 1. A three-sided figure; a triangle. 2. Having or involving three sides, countries, or parties.
three-party adjective involving three parties or elements; `the triangular mother-father-child relationship`; `a trilateral agreement`; `a tripartite treaty`; `a tripartite division`; `a three-way playoff`triangular adjective having three sides; `a trilateral figure`