it can be used to calculate the length of a circular bracelet
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
<u />
<u />
<u />
<u>Step 2: Evaluate</u>
- [Fraction] Exponents:

- [Fraction] Subtract:

- [Fraction] Divide:

Those are vertical angles
It is C (2, 1) I think it is because they intersect