State whether True or False.
All squares are not parallelograms.

Answer

To determine whether the statement "All squares are not parallelograms" is true or false, we can follow these steps:

### Step 1: Understand the Definitions
- **Square**: A square is a quadrilateral with all sides equal in length and all angles equal to 90 degrees.
- **Parallelogram**: A parallelogram is a quadrilateral where opposite sides are equal in length and parallel, and opposite angles are equal.

### Step 2: Analyze the Properties of a Square
- Since all sides of a square are equal, it follows that the opposite sides are also equal.
- Additionally, since all angles in a square are 90 degrees, the opposite angles are also equal.

### Step 3: Compare with the Properties of a Parallelogram
- A square meets the criteria of a parallelogram because:
- Opposite sides are equal (as all sides are equal).
- Opposite angles are equal (all angles are 90 degrees).

### Step 4: Conclusion
- Since every square satisfies the conditions of being a parallelogram, the statement "All squares are not parallelograms" is **False**.

### Final Answer
**False**: All squares are parallelograms.

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