How do you even do these? Can someone help, literally clueless. I would really appreciate answers and an explanation. Thank you! :)

ANSWERS2. SAS - explained in congruency rules3. SSS - two of the sides are marked equal. the other side is shared by both triangles, which means it has to be equal4. Not possible. The rule would be SSA, which isn't a rule.6. ASA. Two angles are revealed to be equal, and the side is shared between triangles which means it's equal (reflexitive property).7. Not possible. The rule would be AAA, and that isn't a ruleCONGRUENCY RULESThe rules of congruency are SAS (side angle side), AAS/SAA (angle angle side), ASA (angle side angle) SSS (side side side). Keep in mind SSA, and AAA are not rulesSAS - it means that there are two sides that are marked as congruent, with an angle in between in. Take your question 2 for example. LN = QN. The angle L=Q. ML=PQ. You are given that these three things are congruent. Therefore, it would make the triangle congruent. Keep in mind, this only works if the angle is between the sidesSSS - all the sides are equal. This is a given. If all the sides are marked equal, then the triangle is congruent. Take, for example, question three. Both the legs are congruent to each other, and they share a side which means that that's equal too.AAS/SAA - two of the angles, and a side are proben equal.ASA - Two angles with a side sandwiched between it ( take #6. )