How to make an equilateral triangle out of square paper
page is for those who want the instruction to make an equilateral triangle out of square paper.
If you want to make a flower with three-petals or a calyx with three sepals, you need a paper with equilateral triangle shape instead of square. This page shows how to make an origami equilateral triangle from a square paper.
In this instruction, I used 15cm x 15cm origami paper. Of course, the folding method is independent of paper size.