What is the measure of
(i) a right angle?
(ii) a straight angle?

Explanation

To solve the question about the measures of a right angle and a straight angle, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Right Angle:**
- A right angle is defined as an angle that measures exactly 90 degrees.
- It is often represented by a small square at the corner of the angle to indicate that it is a right angle.

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