Constructing Line Segment 3AB

To construct line segment 3AB, we need to follow the given dimensions and steps. Here's how to do it:

1. Draw line segment AB: Using a ruler, draw a straight line segment AB with a length of 4 cm.

2. Draw line segment BC: From point B, draw a perpendicular line segment BC with a length of 3 cm.

3. Draw line segment CD: From point C, draw a straight line segment CD with a length of 5 cm.

4. Join point A with point D: Draw a straight line segment AD to join point A with point D.

5. Label the point E: Where line segment AD intersects line segment BC, label the point of intersection as E.

6. Draw line segment AE: Draw a straight line segment AE to complete the line segment 3AB.

7. Measure the length of line segment AE: Using a ruler, measure the length of line segment AE to ensure that it is equal to 3 times the length of line segment AB, which is 12 cm.

Tips for accuracy:

- Use a sharp pencil and a ruler to ensure straight lines.
- Check your measurements frequently to ensure accuracy.
- Erase any unnecessary lines or marks to avoid confusion.
- Label your points clearly to avoid confusion.

By following these steps, you can construct line segment 3AB with precision and accuracy.