My question about median of a triangle.
The English equivalent of the Turkish word "kenarortay" is "median". In English-language geometry sources (like books or web pages), the length of the median is often denoted with expressions like $m_a$. On the other hand, the notation $V_a$ is also common in Turkish textbooks. We don't use $K_a$. This might be due to Turkish mathematicians learning geometry from other mathematicians who speak languages other than English. For instance, we know that German scientists came to Turkey in the $1930$s. However, I'm not sure if this notation was used by the Germans. Do you have any information about the origin of the $V_a$ notation?
Of course, mathematical notations can develop independently in local education systems or at a particular university or school. Do you know of any other countries that use the $V_a$ notation?
Thanks for your interest!
Notes:
Some examples
1. In wikipedia Median (geometry) page https://en.wikipedia.org/wiki/Median_(geometry) we see that $m_a$ notation like $m_a = \sqrt{\dfrac{2b^2 + 2c^2 - a^2}{4}}$.
2. In Mark Dabbs' Elementary Triangle Geometry book, we can see $m_A,m_B,m_C$ notations
