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It is named as the 'INTERIOR ANGLE'.
The size is dependent on the number of sides of the polygon.
However, use the equation
Ext. Ang = 360 / n
Where 'n' is the number of sides of the polygon.
Then
Int. Ang = 180 - Ext. Ang.
Combining the two equations.
Int. Angle = 180 - (360/n)
So as an example the five sided polygon (pentagon).
Int. Ang. = 180 - (360/5)
Int. Ang = 180 - 72
Int. Ang = 108 degrees.
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What is an angle that faces the inside of a polygon or shape and it is formed by consecutive sides of the polygon or shape?
An internal angle of the polygon.
What is an interior angle?
A angle formed inside a polygon by two adjacent sides.
What is the Definition an interior angle of a polygon?
A polygon is a closed plane figure bounded by straight sides. Since it is a closed surface, it has an interior (inside) and an exterior (outside). The interior angle of a polygon is the angle formed by two adjacent sides such that the angle is facing the interior of the polygon.
What is the name of that angles that form by a side of a polygon and and adjacent side?
If measured on the inside of the polygon, the it is an interior angle.
What the difference between convex and non convex polygons?
In a non-convex (or concave) polygon, at least one interior angle is a reflex angle. An alternative definition is that if you take any two points inside a conves polygon, the line joining them is wholly inside the polygon.
