Blend of tatlo (“three”) + siha (“angle”).
tatsihà (Baybayin spelling ᜆᜆ᜔ᜐᜒᜑ)
- (geometry, neologism) triangle
- Synonyms: tatsulok, triyanggulo, tilasitha
- del Rosario, Gonsalo (1969) Maugnaying Talasalitaang Pang-agham : Ingles-Pilipino [Correlative Word List for Sciences : English-Filipino] (overall work in English and Tagalog), Manila: National Book Store, Inc., →LCCN, →OL