Which of the following statements is incorrect ?

Options

A. Each angle of a rectangle is a right angle.
B. A straight angle is `(1)/(2)` of a revolution.
C. A reflex angle is larger than an acute angle.
D. The perpendicular bisector of a line segment is a perpendicular to the line segment that divides it into two parts.

Answer

To determine which of the following statements is incorrect, let's analyze each statement one by one:

1. **Each angle of a rectangle is a right angle.**
- A rectangle is defined as a quadrilateral with four right angles. Therefore, this statement is **correct**.

2. **The right angle of a rectangle is 90 degrees.**
- By definition, a right angle measures exactly 90 degrees. Thus, this statement is also **correct**.

3. **A straight angle is 1 by 2 of a revolution.**
- A complete revolution is 360 degrees. Half of 360 degrees is 180 degrees, which is the measure of a straight angle. Therefore, this statement is **correct**.

4. **The reflex angle is larger than the acute angle.**
- An acute angle is less than 90 degrees, while a reflex angle is greater than 180 degrees. Thus, this statement is **correct**.

5. **The perpendicular bisector of a line segment is a perpendicular to the line segment that divides it into two parts.**
- The definition of a perpendicular bisector is that it is a line that is perpendicular to a segment and divides it into two equal parts. However, the statement is misleading because it implies that the perpendicular bisector is simply "a perpendicular" rather than a specific line that bisects the segment. Thus, this statement is **incorrect**.

### Conclusion:
The incorrect statement is: **"The perpendicular bisector of a line segment is a perpendicular to the line segment that divides it into two parts."**

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