The document provides instructions for constructing a quatrefoil, a geometric ornamental shape, using compass and straightedge. It is an 8-step process that involves drawing a large circle within a square, dividing the circle into 4 sections with diagonals, and then inscribing progressively smaller circles within each other to create the overlapping petal shape of a quatrefoil.

1. Drawing a quatrefoil _ Stonemasonry technical skills at SkillsTech Australia

3. Step 1: Draw a vertical line and a horizontal line intersecting at point A in the centre of the page

4. Step 2: Centre compasses at A and draw a circle radius 100mm

5. Step 3: Construct a square outside the circle.

6. Step 4: Join the square’s diagonals through the centre point A

7. Step 5: Scribe arcs with radius 65mm across the diagonals

8. Step 6: Inscribe circles radius 50mm on the original centre lines at B C D and E so that they fit exactly within the first circle. Terminate circles where they intersect

9. Step 7: Duplicate circles using the same centres B C D and E and radius 45mm. Terminate circles where they intersect with the arcs drawn in Step 5

10. Step 8: Clean up construction lines and darken outlines