Mathematicians at Monash University have cracked a centuries-old puzzle dating back to the 17th century, extending Descartes’ ...

The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate the length of the arc, we need to know what fraction of the circle is shown.

Monash University researchers have extended Descartes’ Circle Theorem by finding a general equation for any number of tangent ...

The activities focus on spatial reasoning and geometry, which are often taught during the last few months of the school year, and which provide important foundations for mathematics reasoning more ...