Explanation:
"corresponding" means the items of a pair to be in the same relative place in both triangles. they have the same markings, if applicable.
1.
E - O
C - R
M - M
2. as per the markings
angle E - angle O
angle C - angle R
angle M (EMR) - angle M (CMO)
3. as per the markings
ER - CO
EM - MO
CM - MR
4.
congruent means they have the same size in both triangles.
in this case, as both triangles are congruent (after some twisting and/or rotating both can be laid on top of each other without anything lapping over anywhere), all 3 corresponding pairs of angles are equal and therefore congruent. see 2.
5.
same criteria as for 4.
same length.
all 3 corresponding pairs of sides are equal and therefore congruent. see 3.
6.
EMR and CMO