I’m not a Geogebra expert. My friend Kev is much better than me. But I wanted to share what I *DO* know, because people keep telling me they haven’t used it, or don’t understand it or never heard of it.

This makes me sad.

Just like the people who don’t know that mathematical sorcery exists on the internet. But that’s a post for another day.

### Some of my favourite things to do with Geogebra when starting out:

Construct equilateral triangles:

Construct a circle given 3 points on the circumference:

Draw gradient functions:

I would love to show anyone who is interested how to do any of these; anything to get people using this tool! Tweet me at @nik_d_maths or email nik dot mort at gmail dot com

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First diagram looks a bit like:

http://fivetriangles.blogspot.com/2013/02/45-overlapping-circles.html

Thanks for the link!