How to make an origami chair with triangular legs

(page 14)

25th picture of origami chair with triangular legs

25.

Apply five "valley-folds" of the step #24.

Prepare to unfold the valley-folded crease.

26th picture of origami chair with triangular legs

26.

Unfold the valley-folded crease of the step #25.

Prepare to apply a "valley-fold" .