540 degrees
No, it is true of all pentagons.
Yes providing that they are regular 5 sided pentagons otherwise no if they are irregular pentagons
regular polygon mean equal sides, equal angles irregular polygon mean it is not equal :)
Pentagons do not have to be regular. Elongating one side will skew two angles and make them non congruent with the other three, creating an irregular polygon.
Yes. It doesn't matter how regular or irregular the sides are. "Five sides" means 540 degrees of interior angles.
A regular and an irregular octagon both have 8 interior angles
It depends on how they are classified. They can have 1 to 4 acute angles, they can have 1 to 4 right angles, they can have 1 to 5 obtuse angles. The individual values of the angles will generate different pentagons. They can be regular or irregular. They can be convex or concave.
Yes, the sum of the interior angles will be 540 deg.
Yes. All hexagons have interior angles totalling 720 degrees, whether they are regular or irregular. The proof of this is fairly easy.
Yes. In the regular polygon, the angles are all equal parts of the 1,080 . In the irregular one, there are bigger and smaller interior angles, but they still add up to the same total.
A rhombus is an irregular 4 sided quadrilateral because although it has 4 equal sides it does not have 4 equal interior angles.
A regular polygon has equal sides and same sizes of interior angles whereas an irregular polygon has sides of different lengths and different sizes of interior angles