1) Since DKLM is Rhombus then these are the valid properties:
• 4 congruent sides
2) If DK is 8 KL=?
As a rhombus, all of their sides are congruent. So KL = 8
The measure of the angle ∠DML = 82º then the measure of ∠DKM
The diagonals of the rhombus bisect the angle on the opposite side. So ∠DKM = 41º