Answer:
The fire triangle includes three essential components required to ignite a fire that is heat, fuel, and an oxidizing agent or oxygen. In the absence of any one of the components, the fire will not take place. The chemistry of the fire triangle says a fire started with the chemical reaction of these three components and can be extinguished when any one of the components will be removed.
Wildfire burns are also a result of the fire triangle in which preheating upslope fuels are the source of heat, wind feeds the oxygen into a spreading fire, and vegetation in a landscape works as fuels.