geometert
form
two numbers with a product of 1 are called elements
Writing a number as the product of its prime factors is called prime factorization.
Factor tree.
Those are called the elements of the set.
Geometry.
geometry
The three R's refers to Reading, Writing, And Arithemetic. The word writing doesn't begin with an r but it does begin with an r sound, and the word "arithmetic," in the old saying, was called 'rithmetic, so it was said as "Reading, Writing, and 'Rithmetic," were the 3 R's.
All people in England are called subjects of the King or Queen.
The reason is because it is a system that uses letters called chemical symbols, which are a shortned way of writing the names of elements.
sample
Without providing more information (subjects in school, subjects of a kingdom, subjects as parts of speech etc.), subjects also fit into catagories.
A ball-point, although they often get called by a popular brand name - Biro in the UK
The chemists' shorthand for elements is called chemical symbols. For example, instead of writing out 'selenium,' it can be quickly written as 'Se.'
Reading, writing, arithmatic, English, Latin, and religion. Other subjects depend on gender and ethnicity. For example: females were also taught homemaking skills and males were taught book keeping.
Yes, isotopes are also tracer elements since most modern disease detection techniques involves the subjects ingesting a small amount of radioactive tracers and detect such things as tumors via x-ray or photographic emulsion techniques. In fact, most tracer elements are isotopes.
Writing to inform your audience is called 'contextual' writing.