What are the mathematical symbols? Tell me what they mean.

≈ approximately equal to

unequal to

= equal to; ≤ less than or equal to; ≥ greater than or equal to; Greater than; Positive or negative; +plus； -minus sign; × multiplication; Eliminate; ⊥ vertical; ‖ Parallel; Angle; ⌒ arc; ⊙ circle; ≌ congruence; ∽similar; Because; ∴ so; Degree; Points; Seconds; Micron ‰; % percent symbol

How does math diary write about 500 words and 5 articles?

Application of quantitative relationship in primary school mathematics

20 15 Jiangsu college entrance examination, are Chinese and mathematics more difficult than in previous years?

The seventh edition of advanced mathematics examination questions

My future mother-in-law is a junior high school math teacher. Now send her a short message of teacher's day blessing. How to write? Please help ~

Ask an experienced teacher how to teach and what the specific steps are. I have no experience at all. What should be paid attention to in class. thank you

What is the postcode of Jinyuan District, Taiyuan City, Shanxi Province?

Mathematics problems in primary schools. Please be sure to write out the calculation process.

When can the Olympic Mathematical Training of the National School Federation be held?

In 2004, there were 24 math problems in the senior high school entrance examination in Jining.