The angle made between geographical meridian and magnetic meridian is called :

Options

A. Compass Angle
B. Dip Angle
C. 'A' and 'B' both
D. None of these

Explanation

To solve the question, "The angle made between geographical meridian and magnetic meridian is called:", we can follow these steps:

### Step 1: Understand the Terms
- **Geographical Meridian**: This refers to the line that runs from the North Pole to the South Pole, representing the Earth's geographic coordinates.
- **Magnetic Meridian**: This is the direction that a magnetic compass points, which is influenced by the Earth's magnetic field.

### Step 2: Visualize the Concept
- Imagine the Earth with its North and South Poles. Draw a line from the North Pole to the South Pole to represent the geographical meridian.
- Now, draw another line that represents the direction in which a compass points; this is the magnetic meridian.

### Step 3: Identify the Angle
- The angle between these two lines (the geographical meridian and the magnetic meridian) is what we are trying to identify.

### Step 4: Recall the Terminology
- The angle formed between the geographical meridian and the magnetic meridian is known as the **dip angle** or **angle of inclination**.

### Step 5: Choose the Correct Option
- From the options given (compass angle, dip angle, both a and b, none), the correct answer is **dip angle**.

### Final Answer:
The angle made between the geographical meridian and magnetic meridian is called the **dip angle**.

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