Who made a mistake and what mistake did they make?

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

If chord ab is congruent to chord cd, then what must be true about ef and eg?