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Visio: An Interactive Demonstration of the Pythagorean Theorem

Yesterday’s Thanksgiving Dinner conversation found its way into the topic of geometry – specifically the calculation of the Earth’s circumference by Eratosthenes. Inspired by this example of geometry, in a spare moment I decided to create a interactive illustration to allow one to get a hand’s-on experience for the Pythagorean Theorem.

In the attached VSD file, you’ll see a simply drawing with several shapes. It isn’t a static picture – as you resize the triangle in the middle the squares of the sides and the square of the hypotenuse will resize accordingly.

Download the Visio file from here.


For example if you select the triangle …

image image

And then resize it …

image image

You’ll see the squares adjust automatically.

The red-dots are shapes I used to store some intermediate calculations.

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