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The fire triangle. The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. [1] The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). [2] A fire naturally occurs when the elements are present and combined in the right ...
The Fire tetrahedron for the article Fire triangle. Source: Own work: Author: Gustavb . This W3C-unspecified vector image was created with Inkscape. Derivative works ...
Fire triangle ta.svg: Triángulo del fuego.svg: SVG development . The source code of this SVG is due to 3 errors. This W3C-invalid vector image was created ...
Fire triangle#Fire tetrahedron; This page is a redirect. The following categories are used to track and monitor this redirect: To a section: ...
Fire was one of many archai proposed by the pre-Socratics, most of whom sought to reduce the cosmos, or its creation, to a single substance. Heraclitus (c. 535 BCE – c. 475 BCE) considered fire to be the most fundamental of all elements. He believed fire gave rise to the other three elements: "All things are an interchange for fire, and fire ...
A burnt out school bus is seen at the fire-damaged Aveson Charter School from the aftermath of the Eaton Fire in Altadena, California on Jan. 13, 2025. / Credit: FREDERIC J. BROWN/AFP via Getty Images
The Tetractys [also known as the decad] is an equilateral triangle formed from the sequence of the first ten numbers aligned in four rows. It is both a mathematical idea and a metaphysical symbol that embraces within itself—in seedlike form—the principles of the natural world, the harmony of the cosmos, the ascent to the divine, and the ...
The tetrahedron is one kind of pyramid, which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron, the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as a "triangular pyramid".