No, on the contrary an octagon has no right angles
a regular octagon has eight sides
it is a square because a square has four side and four right angels
yes
Not having studied theology, I am not so sure about angels! A rectangle has four right angles. Also, any polygon with 5 or more sides can have four right angles.
There are four angles in square. All of them are right angels.
It is a square
An octagon has 8 interior angles that add up to 1080 degrees
All four corners of a square are right angles.
A right trapezium.
A square
rhombus and parallelogram