Joint of femur with pelvic girdle is .......... Joint.

Explanation

To answer the question about the joint of the femur with the pelvic girdle, we can follow these steps:

1. **Identify the Joint**: The joint where the femur connects with the pelvic girdle is known as the hip joint.

2. **Understand the Structure**: The hip joint is formed by the acetabulum of the pelvic girdle, which is a concave surface, and the rounded head of the femur, which fits into this socket.

3. **Classify the Joint Type**: The hip joint is classified as a ball and socket joint. This classification is due to the spherical shape of the femur's head that fits into the cup-like structure of the acetabulum.

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