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Right Angle
What Is A Right Angle?
The following are the unique geometric characteristics of any
Right Angle
.
An angle is created when two rays intersect.
The intersection of the two rays is called the vertex.
There is a standard method of labeling any Angle. First label the vertex; we choose to label it
A
. The two rays are labeled
Points
Z
and
C
.
The
Degree
of the Right Angle between two rays is determined by the space between the rays. See diagram below. One ray is horizontal thus giving us a reference point. The distance of separation between
Rays Z and C
determines the angle's value.
Is there a standard way of writing an angle as a mathematical expression? The answer is yes. Here are the details: (1) All angles must start with the
∠
character. (2) The vertex must be the center label when writing an angle. (3) Valid right angle statements in this example are
∠ZAC
and
∠CAZ
.
A Right Angle is exactly 90 degrees. A "half square" symbol, red in the diagram, is how we show a right angle.
See More About Angles