Pentagon
An obtuse triangle does not always have three congruent sides. An obtuse triangle can be any form that always has three angles.
An equilateral pentagon has equal sides but htere are other pentagons which do not.
Only a pentagon has 5 sides but it doent have to look the same it can look absoluntly different ans long as it has 5 sides its a pentagon
rectangle
If it is a regular pentagon then it will have 5 congruent sides.
A regular pentagon has 5 congruent sides
An... irregular pentagon?
i don't know; that person is wrong it is a regular pentagon that has all sides congruent
A polygon with five congruent sides is a pentagon.
no
Not necessarily; if it is a regular pentagon, then yes.
a regular pentagon or just a pentagon
no
yes
Sometimes. For a regular pentagon, all the sides and interior angles are congruent. However, this isn't the case for some pentagons.
is a regular pentagon if all its angles are congruent and is a general pentagon if they are not.