Give two example of Hinge joints.

Explanation

### Step-by-Step Solution:

1. **Understanding Hinge Joints**:
- Hinge joints are a type of synovial joint that allow movement primarily in one plane, similar to the motion of a door hinge. This means they can flex and extend but do not allow for rotational movement.

2. **Identifying Examples**:
- To answer the question, we need to identify two specific examples of hinge joints.

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