| Construct the Peaucellier's linkage. |
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| Construct a linkage to draw the ellipse. |
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| Construct a linkage to draw the lemniscate as thus: |
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| Construct another linkage to draw the lemniscate as thus: |
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| Construct the Peaucellier's linkage. |
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| Construct a linkage to draw the ellipse. |
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| Construct a linkage to draw the lemniscate as thus: |
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| Construct another linkage to draw the lemniscate as thus: |
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| Construct a linkage to draw the cardioid as thus: |
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| Construct a linkage to draw the nephroid |
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| Construct a linkage to draw the deltoid. |
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| Construct a linkage to draw the astroid. |
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