yes
No, a regular octagon has 8 congruent sides
No. It is the opposite sides of a regular octagon that are parallel and congruent.
YES it is.
No, they do not.
An octagon can have congruent angles if it is regular, meaning all its sides and angles are equal. In a regular octagon, all eight internal angles are congruent, each measuring 135 degrees. However, an irregular octagon may have varying angles, so the number of congruent angles can differ. In summary, a regular octagon has eight congruent angles, while an irregular one may have fewer or none.
8 if it's a regular octagon
Eight
yes
8
Yes, they all are congruent and have 4 lines of symmetry
There are 6 of them.
4