A pentagon has an obtuse angle
the angle sum of a pentagon is 540.
The measurement of an interior angle of a pentagon depends on whether the pentagon is a "regular pentagon". The sum of the measures of the interior angles of any polygon can be calculated using the formula (n-2)180, where n = the number of sides. If the pentagon is a regular pentagon, then all of the interior angles are congruent (i.e. : 144 degrees). Interior angle is the inside angle of any angular object. A triangle for instance has three outside angles and three interior angles, the angles of the points from the inside.
a pentagon.
An angle in a pentagon can have any value between 0 and 360 degrees.
The measure of one angle of a regular pentagon is 108 degrees.
obtuse angle
The total of the interior angles of a pentagon = 540 (in a regular pentagon, each interior angle is 108 degrees). The exterior angles would then be 5*(360-108) = 5*252 = 1260 degrees.
Usually, the measure of an exterior angle of a pentagon is greater.
a pentagon's inside angle is 540 degrees
An irregular pentagon.
Concave pentagon.