Prefix Origins “tri-” Adding the prefix “tri-” to a word applies the meaning “three”. This prefix has its origins in both Latin (“tres” and “tria”) and Greek (“treis” and “tria”). Add the prefix “tri” then write the new words: cycle ceps angle plet pod ple athlon ptych logy dent Write the above “tri” words next to their correct meanings : A muscle with three heads (points of origin). A three wheeled cycle, pedalled by the feet. A three-pronged spear. A series of three related works of literature. A stand or a table having three legs. A group of three similar things, eg. one of three born at one birth. Three times as much. An athletic contest comprised of three different events. A three-sided polygon. Write a brief description of a triptych: Write as many words as you can using only the letters in: TRIATHLETE Studyladder