Use the compass and the ruler to bisect them.
`80^@`

Explanation

To bisect an angle of 80 degrees using a compass and ruler, follow these steps:

### Step-by-Step Solution:

1. **Draw a Line Segment**: Start by drawing a straight horizontal line. Label the endpoints of this line as point A and point B.

**Hint**: Use a ruler to ensure the line is straight and even.

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