In 2007, all households in the United States earned roughly $7.723 trillion. One half, 49.98%, of all income in the US was earned by households with an income over $100,000, the top twenty percent. Over one quarter, 28.5%, of all income was earned by the top 8%, those households earning more than $150,000 a year.ne key measure is the real median level, meaning half of households have income above that level and half below, adjusted for inflation. According to the Federal Reserve, this measure was $51,939 in 2013, below the 1999 peak of around $57,000.
Edges. An edge is a line segment that joins two vertices. This tetrahedron has 6 edges. And this pentagon has 5 edges: An edge can also be the boundary of a shape. Such as the circumference of a circle.
The Meaning of Angle or Definition of an Angle. Math. Angles are formed by two rays that begin at the same point or share the same endpoint. The angle measures the amount of turn between the two arms and is usually measured in degrees or radians. Where the two rays intersect (come together to meet) is called the vertex.