Description: A scalene triangle is a triangle that has three sides of different lengths and three angles of different measures. All interior angles in a scalene triangle add up to 180 degrees, a property shared by all triangles. Key properties of a scalene triangle include its longest side being opposite its largest angle, its shortest side being opposite its smallest angle, and it having no lines of symmetry.
Description: A right-angled triangle (or right triangle) is a triangle with one interior angle measuring exactly 90 degrees. The side opposite the right angle is the longest side, called the hypotenuse, while the other two sides, which form the right angle, are known as legs or the base and height.