Recently, in a paper by Tarski and Givant (Bull. Symbolic Logic, 1999, 5, 175–214), Tarski’s system of geometry was revived. The system originated in Tarski’s lectures of 1926–27, but was published in the 1950s–60s and in 1983. On the other hand, the author’s papers of 2005–07 revived the betweenness geometry, initiated by the Estonian scientists Sarv, Nuut, and Humal in the 1930s, and by the author in 1964. It is established here that Tarski’s system of geometry is essentially the same as Euclidean continuous betweenness geometry with a group of movements.
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