1. MODULE I VOCABULARY
PART IV

2. CONSTRUCTION SITE
The first construction we’ll discuss is copying a line segment.

3. CONSTRUCTION SITE
Place the ends of your compass on the ends of the segment to be copied and lock in the length.
Place the pointy end on the new endpoint and make an arc with the drawing end.
Make a dot on that arc.
Connect the dots.

4. CONSTRUCTION SITE

5. CONSTRUCTION SITE
Copy the segment below.

6. CONSTRUCTION SITE
The next construction is copying an angle.

7. CONSTRUCTION SITE
Place the pointy end on the given angle’s vertex and make an arc that crosses both rays. Make a dot where the arcs cross the angle
Keeping that length locked in, place the pointy end of your compass on an endpoint of the new segment and make an arc that crosses it.
Place the pointy end and the drawing end on the two points on the old angle where the arc touches the angle

8. CONSTRUCTION SITE
Lock in that length and place the pointy end on your line segment and arc intersection.
Make an arc.
Where the new arc crosses the old arc, make a dot.
Connect your vertex to the new intersection.

9. CONSTRUCTION SITE

10. CONSTRUCTION SITE
Copy the angle.

11. CONSTRUCTION SITE
The next construction we’ll discuss is also one of the easiest…a perpendicular bisector.

12. CONSTRUCTION SITE
Place the pointy end of your compass on an endpoint of the segment.
Ensure that the drawing end is a bit past the halfway point of the segment and make a semi-circle.
Keeping that length locked in, repeat step #2 for the other endpoint.
Draw and connect the intersections of the two arcs.

13. CONSTRUCTION SITE

14. CONSTRUCTION SITE
Construct the perpendicular bisector of the line below.

15. CONSTRUCTION SITE
To construct a regular perpendicular line, you simply don’t use the endpoints for your places for the line.

16. CONSTRUCTION SITE
The next construction is an angle bisector.

17. CONSTRUCTION SITE
Make an arc with the pointy end of the compass on the vertex. The arc should touch both rays.
Now place the pointy end on the intersection of the ray and the arc and make another arc. Repeat for the other intersection.
There should be an intersection of arcs in the middle of the angle. Connect it with the vertex.

18. CONSTRUCTION SITE

19. CONSTRUCTION SITE
Construct the bisector of the angle below.

20. CONSTRUCTION SITE
Lastly, we construct parallel lines.

21. CONSTRUCTION SITE
First we draw a line which intersects the point and the line.
Draw a small arc from the intersection on the line and another (with the same length) from the point and on the line.
From that intersection, measure the length to the arc intersection and copy that onto the upper arc.

22. CONSTRUCTION SITE
Connect the intersection and the point to form the parallel line.

23. CONSTRUCTION SITE

24. CONSTRUCTION SITE
Construct a line parallel to the line below.