Linkage

Construct the linkage to draw the lemniscate as thus:

Construct the linkage to draw the lemniscate as thus:

Construct the linkage to draw the lemniscate as thus:

Construct the Peaucellier's cell.

Construct the Hart's linkage.

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus:

Construct the linkage to draw the ellipse as thus: