Confused: Do you mean the white part of the eyes? Are they red and irritated? The sclera is generically referred to as the white of the eye, made of a very tough type of protein. When it becomes red,  the causes can vary; from infection, to eye pressure, to injury, dryness of the cornea, allergy, etc. While some causes may be self-limited, others could blind you.
Given that triangle CDE is translated down and to the right, forming triangle C'D'E'. Therefore, the congruency statement that is correct is Î´DCE â Î´D'C'E'.
If two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. A key component of this postulate (that is easy to get mistaken) is that the angle must be formed by the two pairs of congruent, corresponding sides of the triangles. If the angles are not formed by the two sides that are congruent and corresponding to the other triangle's parts, then we cannot use the SAS Postulate.