No, some of the geometrical answers are wrong.
Yes, all of the radii in a single circle are congruent.
Yes. The corners must be right angles for it to be inscribed on the circle.
Yes. It follows from one of the circle theorems which states that the angle subtended in a semicircle is a right angle.
Yes, providing that the radii are all in the same circle
Yes providing that they are in the same circle
Yes, providing it is the same circle.
Yes, it is.
In a circle no, in a square yes.
yes there is i will give you it press up down L1 R1 right left circle up down right circle circle left it will work
yes. the leg of the triangle has to be formed different because of the circle
Yes
Yes