Area of Parallelogram

| View Cart ⇗ | Info

“From Figure 4 he sees a parallelogram equal to a rectangle of the same base and altitude. Cut out and paste in rectangle form.” -Foster, 1921

Keywords

rectangle, quadrilateral, comparison, visual math, parallelogram area, cut and paste, hands on math

Galleries

Quadrilaterals

Source

Ellsworth D. Foster ed. The American Educator (vol. 1) (Chicago, IL: Ralph Durham Company, 1921)

Downloads

TIFF (full resolution)

2400×1307, 138.3 KiB

Large GIF

1024×557, 17.5 KiB

Medium GIF

640×348, 10.2 KiB

Small GIF

320×174, 4.7 KiB