In mathematical reasoning, this format is generally used to prove problems, and some geometric problems are also used.

Because ∵; So ∴ is the most basic symbol.

Write the known conditions after the question \u\u, and write the conclusion ∴ on the next line. It's better to put parentheses after the conclusion, and what theorem is written based on.

For reasoning problems, we should master various theorems skillfully and try to use mathematical language, such as △ ABC△ def (SSS).

new hand

What really can't be described should be described in Chinese characters, but it should be explained clearly and not ambiguous.

After mastering the theorem, it is recommended to do more problems skillfully, and then you will gradually use them.

Hope to adopt-~