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Drawing a cinquefoil _ Stonemasonry technical skills at SkillsTech Australia

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<ul><li>Method </li></ul><ul><li>Construct a pentagon, and draw a small circle centred at each point </li></ul><ul><li>Draw a large circle to inscribe these circles </li></ul><ul><li>Draw circles concentric to the small circles, and terminate all curved lines at their intersection points </li></ul>Quatrefoil construction

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

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Step 2: Centre compasses at A and draw a circle radius 25mm

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Step 3: Mark a vertical line tangent to the horizontal line at B

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Step 4: Scribe a circle centred at B radius 50mm

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Step 5: Scribe an arc A C D

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Step 6: Scribe an arc C D E

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Step 7: Line CE is one side of the inscribed pentagon. Step off Line CE around the circle to form pentagon C E F G H C

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Step 8: Clean up construction lines

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Step 9: Bisect line CH at J

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Step 10: Draw a circle radius HJ

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Step 11: Draw identical circles at C E F and G

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Step 12: Draw an inscribing circle centred at B

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Step 13: Draw a circle at B that is half the size of the inscribing circle

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Step 14: Draw concentric circles with radius 25mm at C E F G and H

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Step 15: Terminate all circles at their intersection points

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Step 16: Clean up construction lines and darken outlines