Only the square has.
No.
A square.
the squares diagonal are all congruent to each other, and the diagonals make 4 isoceles triangles.
square
0.5
Only the square has.
No.
A square
A square.
the squares diagonal are all congruent to each other, and the diagonals make 4 isoceles triangles.
False. There are 6 pairs of smaller congruent triangles and two pair of larger ones.
Yes the diagonals of a square are always congruent. Their length is a*root 2 where a is the side of the square.
square
Yes.
Yes.
It is a square.