Final answer:
The government measure to define those living in poverty is called the poverty line. It is determined by the U.S. Census Bureau and helps assess the extent of poverty and formulate assistance programs.
Step-by-step explanation:
The government measure to define those living in poverty is called the poverty line. In the United States, the poverty line is determined by the U.S. Census Bureau, which takes into account factors such as household income, family size, and the cost of living. The poverty line helps policymakers and researchers assess the extent of poverty in a nation or region and formulate programs and policies to assist those in need.