Folding instructions for a) a square an b) an equilateral triangle

Paper Folding: Squares and Equilateral Triangles – Playful Bookbinding and Paper Works

Renaissance Banff II. Bridges Banff. Mathematics, Music, Art, Architecture, Culture - PDF Free Download

How to fold an equilateral triangle from a square

geometry - Area of a right triangle with right angle on a bounding square diagonal - Mathematics Stack Exchange

Briony THOMAS, Associate Professor, PhD, University of Leeds, Leeds, Institute of Design, Robotics and Optimisation

Constructive work; . right square. Fold itback to upper right corner of paper. How many trianglescan you see? How many squares? How many moresquares than triangles? Fold other corners in same man-ner (

geometry - Folding a rectangular paper and finding the area of the triangle so formed. - Mathematics Stack Exchange

45-45-90 Triangle, Formula, Rules & Examples - Lesson

Paper folding shapes, KS3-4 maths