In Exercises 1 to 4 state the reason SSS SAS ASA AAS or HL why the triangles are congruent 1 Given Prove 2 Given Prove 3 Given Prove 4 Given Prove 21 42 LCAB LDAB ACABADAB LCAB LDAB AC AD ACABADAB LM and LR are right angles MN QR MP RP AMNP AQRP P is the midpoint of MR and LN 40 AMNP AQRP C B D 1 2 Exercises 1 2 M Exercises 3 4 P R A N