What is the shape of earth at poles?

Explanation

To determine the shape of the Earth at the poles, we can follow these steps:

### Step 1: Understand the Ideal Shape of Earth
- Initially, we consider the Earth to be a perfect sphere. This is a common assumption based on the general appearance of the Earth from space.

### Step 2: Consider Earth's Rotation
- The Earth rotates around its axis, which runs from the North Pole to the South Pole. This rotation is crucial in understanding the shape of the Earth.

...