In the statements shown, explain the student's error. What is the shape of the quadrilateral? JK = KL and IM M.
ZMIK & KLM
M
Therefore, AMIK & AKLM by SAS. The triangular
halves of JKLM are congruent, so JKLM must be a
parallelogram.
Х
C
O A. The student should have used the fact that the opposite sides of the quadrilateral are parallel.
OB. The student did not observe that adjacent sides are congruent and opposite sides are not congruent.
OC. The student misapplied the SAS Triangle Congruence Theorem.
OD. The student's Flaim that JK = KL is incorrect. It can be seen that JK – ML.