Which of the following arrangement represents the fire triangle?
Oxygen, fuel and heat.
The fire triangle is a pictorial representation of the necessary elements needed to start a fire. The three-sided fire triangle shows that oxygen, heat and fuel in the proper proportions are necessary to create a fire. If any one of these three elements is removed, a fire cannot exist. Fuel is considered as any material capable of burning. This would include wood, candle wax, petrol, kerosene etc.