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For a simple polygon (non-self-intersecting), regardless of whether it is convex or non-convex, this angle is called an internal angle (or interior angle) if a point within the angle is in the interior of the polygon. A polygon has exactly one internal angle per vertex.
- Angle
Internal and external angles. An angle that is part of a...
- Transversal (geometry)
Transversals play a role in establishing whether two or more...
- Angle
Internal and external angles. An angle that is part of a simple polygon is called an interior angle if it lies on the inside of that simple polygon. A simple concave polygon has at least one interior angle, that is, a reflex angle.
Transversals play a role in establishing whether two or more other lines in the Euclidean plane are parallel. The intersections of a transversal with two lines create various types of pairs of angles: consecutive interior angles, consecutive exterior angles, corresponding angles, and alternate angles.
The angles that lie inside a shape, generally, a polygon, are said to be interior angles, or the angles that lie in the area enclosed between two parallel lines that are intersected by a transversal are also called interior angles. Learn more about interior angles in this article.
In geometry, an interior angle (or internal angle) is an angle formed by two sides of a simple polygon that share an endpoint, namely, the angle on the inner side of the polygon. A simple polygon has exactly one internal angle per vertex.
Interior angles are angles within [inside] a polygon. In this section of the lesson, we will show you how to calculate individual interior angles and the sum of the interior angles. For example, in a "triangle", the total sum of the interior angles is 180.
The measure of an exterior angle of a triangle is the sum of its two remote interior angles. Remote interior angles are the interior angles of a triangle that are opposite to the exterior angle under consideration.
