Lines joining places of equal angle of declination are called

Options

A. Isogonic
B. Isoclinic
C. agonic
D. acoclinic

Answer

To solve the question, we need to identify the term used to describe lines that connect places with equal angles of magnetic declination.

### Step-by-Step Solution:

1. **Understanding Magnetic Declination**:
- Magnetic declination is the angle between magnetic north (the direction a compass points) and true north (the direction along the earth's surface towards the geographic North Pole). This angle can vary based on location and time.

2. **Identifying the Terms**:
- The question asks for the lines that connect points of equal magnetic declination.
- The terms related to magnetic declination include:
- **Isogonic Lines**: Lines that connect points of equal magnetic declination.
- **Agonic Lines**: Lines where the magnetic declination is zero (i.e., magnetic north aligns with true north).

3. **Analyzing the Options**:
- Since we are looking for lines that represent equal angles of declination, we focus on isogonic lines.
- Agonic lines are not what we need as they represent a specific case where the declination is zero.

4. **Conclusion**:
- Therefore, the lines joining places of equal angle of declination are called **Isogonic Lines**.

### Final Answer:
Lines joining places of equal angle of declination are called **Isogonic Lines**.

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