insider.si.edu

Geometric Model by A. Harry Wheeler, Equilateral Triangle with Inscribed Rectangle or Rhombus with Inscribed Rectangle, Plane Dissection

They can be arranged as an equilateral triangle or a rhombus .The pieces on one side have smaller plastic parts on them so that the equilateral triangle and the rhombus both appear to have an ...
Simon Fraser University

More on Triangles: Lesson One

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to ...
insider.si.edu

Geometric Model by A. Harry Wheeler, Equilateral Triangle with Inscribed Rectangle or Parallelogram with an Inscribed Square, Plane Dissection

The pieces form an equilateral triangle with an inscribed rectangle which transforms into a parallelogram with an inscribed square. This is a special case of Wheeler's model 4K (trapezoid into a ...