Triangular microliths may be isosceles, scalene or equilateral. For example, right triangles, isosceles triangles and equilateral triangles are non-generic and non-degenerate. The five cases correspond to the triangle being equilateral, right isosceles, right, isosceles, and scalene. Either diagonal of a rhombus divides it into two congruent isosceles triangles. The obtuse isosceles triangles are golden gnomons. The pentagram includes ten isosceles triangles&colon; five acute and five obtuse isosceles triangles. An isosceles triangle is constructed with equal sides . The side view is a isosceles trapezoid. In an isosceles trapezoid, the base angles have the same measure pairwise. Pyramids with a hexagon or higher base must be composed of isosceles triangles. Most triangular threadforms are based on an isosceles triangle. Duplicate the right triangle to form the isosceles triangle . This plug has three rectangular pins forming an isosceles triangle. The Euler line of an isosceles triangle is perpendicular to the triangle's base. Spratly Island is shaped like an isosceles triangle.