NO because if you look at the shape it is different.
That triangle needs 7 more sides and angles to be a decagon!
The shape is called a decagon. If all the sides and angles are the same, it is called a regular decagon.
No. A regular polygon has all sides the same length and all angles the same size. A regular pentagon has 5 angles each 108 degrees. A house-shaped pentagon does not have all angles the same size, so therefore it cannot be regular.
It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.
No there are different angle such as right angles, obtuse angles, and acute angles.
pentagon pentagon
It is a pentagon. It is irregular, but an irregular pentagon can have all sides the same or all angles the same - so irregularity is not enough. There is no special name.
A shape with five angles and five sides that do not all measure the same is an irregular pentagon. A regular pentagon has all five sides and angles the same size.
a pentagon
Pentagon
An irregular pentagon.
It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.