The symbol for "equivalent to" in mathematics is usually represented by three horizontal lines: **≡**.

It is used in various contexts:
- In **modular arithmetic**, \( a \equiv b \ (\text{mod} \ n) \) means \( a \) and \( b \) leave the same remainder when divided by \( n \).
- In **logic**, it denotes logical equivalence, where two statements have the same truth value.
- In **geometry**, it can indicate that two figures or angles are congruent.

Would you like more details on any of these contexts or have further questions?

Here are 5 related questions:
1. What is the difference between "equals" ( = ) and "equivalent to" ( ≡ )?
2. How is the equivalence symbol used in modular arithmetic?
3. Can you explain logical equivalence with an example?
4. What is the symbol for geometric congruence?
5. In what other fields of mathematics is "equivalent to" used?

**Tip:** Always check the context in which the "equivalent to" symbol is used, as its meaning can vary!

Explore the meaning of the symbol 'equivalent to' (≡) in various mathematical contexts such as modular arithmetic, logic, and geometry. This concept is suitable for high school students (Grades 10-12) and includes key formulas and theorems.

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