8. Set your dividers for the distance between

4. Using the procedure for finding the length of

line b, measure the distance between point 4 and point

points 1 and 3 of the full plan. Using point 1 of the

5 to get the length of line a.

pattern for a pivot point, scribe an arc on each side of

point 1.

5. Draw an extension to the vertical center line of

the full-plan view. Construct a base line perpendicular

9. With a as the radius, and using each point 2 as

to the center line. Mark the intersection of the two lines

a pivot point in the pattern, scribe an arc to intersect each

in the pattern as point P

of two preceding arcs to establish points 3.

6. Use your dividers to measure the distance from

10. With 2-4 of the full plan as a radius, and

point P to point 2 in the full-plan view. Using this

using points 2 in the pattern for pivot points, scribe arcs

measurement as your radius and point P of your pattern

at 4.

as the pivot point, scribe an arc on each side of point P

11. Set the dividers for the length of a, and with

to get the true length of the base line. Label each of these

points 3 in the pattern for pivot points, scribe arcs to

points as point 2.

establish points 4.

7. Using the true length of line a of step 3 as your

12. Set the dividers for the distance between 3 and

radius, scribe an arc from each point 2 to intersect the

5 in the full plan. Using points 3 of the pattern for your

center line to establish point 1 and your first triangle in

pivot points, scribe arcs at 5.

the pattern.

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