# interior angle

(redirected from Interior angles)
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Related to Interior angles: exterior angles

## interior angle

1. an angle of a polygon contained between two adjacent sides
2. any of the four angles made by a transversal that lie inside the region between the two intersected lines

## interior angle

[in′tir·ē·ər ′aŋ·gəl]
(mathematics)
An angle between two adjacent sides of a polygon that lies within the polygon.
For a line (called the transversal) that intersects two other lines, an angle between the transversal and one of the two lines that lies within the space between the two lines.
References in periodicals archive ?
Initially, they defined it as a figure made with two half lines, but they were not satisfied with this definition because it was not clear whether the definition referred to interior angle or exterior angle (see Figure 2).
JH: When you say angle AOB, do you mean the interior angle or the exterior angle?
For any triangle with interior angles [alpha], [beta] and [gamma], one has that f([alpha]) = f([beta]) = f([gamma]) = k which are the lengths of the sides of an equilateral triangle with sides of length k.
Suppose that [alpha], [beta] and [gamma] are the interior angles of a triangle.
deflection angle interior angle chord 3-4-5 method tape-sine method sine cosine tangent clockwise counterclockwise azimuth bearing
The terms deflection angle and interior angle are used to describe two of the types of angles used in surveying.
Then he found that the sum of the interior angles of the pentagon is 180 X 5, or 540, degrees.
It uses the interior angles, and latitudes and departures to balance the traverse.
Two lines later, the student continued: "Now, a trapezoid DQMF exists (DF is parallel to QM, because it is already established that the angles FDQ and DQM are 45 degrees and 135 degrees respectively, and if the same side interior angles are supplementary, then the lines are parallel).
The interior angles of this triangle total 180 degrees.
What do the interior angles of a hexagon add up to in degrees?
What do the interior angles of a regular pentagon add up to in degrees?

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