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Acute Angle
What Is A Acute Angle?
The following are the unique geometric characteristics of any
Acute 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 angles. First label the vertex; we choose to label it
A
. The two Rays are labeled
Points
B
and
C
.
The
Degree
of the 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 B and C
determines the Acute 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 angle statements in this example are
∠BAC
and
∠CAB
.
An acute angle is always less than 90 degrees. In our example below, the Acute Angle is 41°.
See More About Angles