How to make an origami chair with triangular legs

(page 12)

21th picture of origami chair with triangular legs

21.

Rotate the origami chair model by 180 degrees.

Prepare to apply a vertical "mountain-fold" .

22th picture of origami chair with triangular legs

22.

Apply the vertical "mountain-fold" of the step #21.

Prepare to rotate the origami chair model by 90 degrees.