This video explains how 19th century French physicist Jules Antoine Lissajous used tuning forks to map out two-dimensional ...

Save guides, add subjects and pick up where you left off with your BBC account. Two-dimensional (2D) shapes are completely flat. They cannot be picked up. 2D shapes can be found printed in a book ...

To calculate the perimeter, label and add up the length of each side. This shape is made from two rectangles. What is the perimeter of this shape? First, calculate the missing lengths \(x\) and \(y\).

Our work aims to do the same thing for three, four and five-dimensional shapes - to create a directory that lists all the geometric building blocks and breaks down each one's properties using ...

In other words, are there characteristics of each shape you could measure ahead of time to determine whether they’re scissors congruent? For two-dimensional shapes, the answer is easy: Just determine ...

If you can ever peer beyond three dimensions, you will be able to see wondrous things: hyperdimensional jewels; shapes made of ... through carefully shaded 2-dimensional representations.

This has led to the situation where we now have a suite of robust 2- dimensional particle shape and size factors available to aid us in assigning morphological description to a particulate system.