Etymology

tam giác ‎(“triangle”) +‎ đều ‎(“equally; evenly”)

Pronunciation

• (Hà Nội) IPA^(key): [taːm˧˧ z̻aːʔk̚˧ˀ˦ ˀɗew˨˩]
• (Huế) IPA^(key): [taːm˧˧ jaːʔk̚˦˥ ˀɗew˧˧]
• (Hồ Chí Minh City) IPA^(key): [taːm˧˥ jaːʔk̚˦ˀ˥ ˀɗew˨˩]