For the next few weeks, the planet Mars will form an almost perfect isosceles triangle with the two bright stars marking the heads of the Gemini Twins, Pollux and Castor. This is the view for Feb. 24.

So, what's with the biscuits? Oh a triangulator machine! Very cool! Right, there are four different types of triangle. First, here's an isosceles triangle, it has two equal length sides and two ...

There are four different triangles with different properties. A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length.