Construction Of An Isometric Ellipse

| View Cart ⇗ | Info

An illustration showing how to construct an isometric ellipse by compass and six circle arcs. “Divide OA and OB each into three equal parts; draw the quadrant AC. From C, draw the line Cc through the point 1. Through the points 2 draw de at an angle of 45° with the major axis. Then 2 is the center for the ends of the ellipse; e is the center for the arc dc; and C is the center for the arc cf.”

Source

Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 37

Downloads

TIFF (full resolution)

2400×1922, 320.8 KiB

Large GIF

1024×820, 44.2 KiB

Medium GIF

640×512, 25.8 KiB

Small GIF

320×256, 11.2 KiB