What is called an ideal gas? Why?

(N/A) gas that strictly follows Boyle's law,Charles's law,and Avogadro's law under all conditions of temperature and pressure is called an ideal gas.
Such a gas is hypothetical. It is assumed that there are no intermolecular forces of attraction or repulsion between the molecules of an ideal gas,and the volume occupied by the molecules is negligible compared to the total volume of the gas.
In reality,no gas is perfectly ideal. However,real gases behave like ideal gases at low pressure and high temperature,where intermolecular forces become negligible.