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When two lines meet (or intersect) at a point, then an angle is

formed. The point of intersection of the lines is called the vertex.

formed. The point of intersection of the lines is called the vertex.

An angle is name by using the names of the points on the arms,

with name of the vertex in the middle. The symbol used to

represent an angle is

with name of the vertex in the middle. The symbol used to

represent an angle is

Lines AB and AC meet at the point A to form an angle. The point A is the

vertex of the angle, and the lines that meet to make the angle are called the

arms of the angle.

vertex of the angle, and the lines that meet to make the angle are called the

arms of the angle.

For example: the angle above could be named as

BAC

or

BAC

vertex

or

A

just

Since point A

is the vertex

is the vertex