A triangle is a closed figure formed by connecting three non-collinear points, called vertices, by line segments to result in three sides and three interior angles (hence the word "tri-angle"). If the three angles all lie in the same plane, the...

In a right triangle, the hypotenuse is the side of the triangle which is opposite the right angle. It is also the longest side of the triangle. The other two sides are sometimes called the "legs" of the right triangle. The Greek word hupoteinousa, from...

A triangle is a closed three-sided, three-angled figure, and is the simplest example of what mathematicians call polygons (figures having many sides). Triangles are among the most important objects studied in mathematics owing to the rich mathematical...

Geometric figure with three sides and three angles. Each two sides meet at a point called a vertex, and the three angles sum to 180°. A triangle with one 90° (right) angle is a right triangle. A triangle with all sides (and thus all angles)...

// n. A notational device used to simplify tree structures by omitting the details of some branch of the tree whose internal structure is not at issue. The suppressed subtree is represented merely by a triangle with a node label at the top and the...

The longest side of a rightangled triangle, neither of whose angles forms a right angle (i.e....

A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are straight line segments. In Euclidean geometry any three non-collinear points determine a triangle and a unique plane, i.e. two...