Sunken ships, downed airplanes, UFOs…one scientist believes he’s cracked the unexplained phenomena of the Bermuda Triangle.

What is the greatest subset of these N2 points such that no three of them form an isosceles triangle? (Note: Degenerate triangles, or triangles with zero area, do count as triangles here, as long ...

The isosceles triangle can be split into two right-angled triangles. Pythagoras’ theorem can then be used on either of the two right-angled triangles.

A triangle is a three-sided shape, where the sides are straight and meet at three vertices. The prefix "tri" means three. There are several types of triangles. Do you know what they are?

Explore the triangle area formula, its derivation, and practical examples to master this essential geometric concept effortlessly.

There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this KS2 Maths guide from BBC Bitesize.

Daniel Buchanan, Oscillations Near an Isosceles-Triangle Solution of the Problem of Three Bodies as the Finite Masses Become Unequal, American Journal of Mathematics, Vol. 39, No. 1 (Jan., 1917), pp.