| Construct the linkage to draw the lemniscate as thus: |
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| Construct the linkage to draw the lemniscate as thus: |
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| Construct the linkage to draw the lemniscate as thus: |
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| Construct the Peaucellier's cell. |
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| Construct the Hart's linkage. |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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| Construct the linkage to draw the ellipse as thus: |
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