# IB Maths Resources from Intermathematics

#### Proving Pythagoras Like Einstein?

Proving Pythagoras Like Einstein? There are many ways to prove Pythagoras’ theorem – Einstein reputedly used the sketch above to prove this using similar triangles. To keep in the spirit of discovery I also just took this diagram as a starting point and tried to prove this myself, (though Einstein’s version turns out to be […]

#### New teacher and student resources

I’ve just made a big update to both the teacher and student resources sections: Student resources These now have some great free resources for students to help them with the IB maths course – including full course notes, formula books, Paper 3s, an Exploration guides and a great mind-map. Make sure to check these all […]

#### Finding the average distance in a polygon

Finding the average distance in a polygon Over the previous couple of posts I’ve looked at the average distance in squares, rectangles and equilateral triangles. The logical extension to this is to consider a regular polygon with sides 1. Above is pictured a regular pentagon with sides 1 enclosed in a 2 by 2 square. […]

#### Finding the average distance in an equilateral triangle

Finding the average distance in an equilateral triangle In the previous post I looked at the average distance between 2 points in a rectangle. In this post I will investigate the average distance between 2 randomly chosen points in an equilateral triangle. Drawing a sketch. The first step is to start with an equilateral triangle […]

#### What is the average distance between 2 points in a rectangle?

What is the average distance between 2 points in a rectangle? Say we have a rectangle, and choose any 2 random points within it. We then could calculate the distance between the 2 points. If we do this a large number of times, what would the average distance between the 2 points be? Monte Carlo […]

#### Plotting Pi and Searching for Mona Lisa

Plotting Pi and Searching for Mona Lisa This is a very nice video from Numberphile – where they use a string of numbers (pi) to write a quick Python Turtle code to create some nice graphical representations of pi. I thought I’d quickly go through the steps required for people to do this by themselves. […]