Directions for the next two questions: Answer the questions based on the following diagram

In the following diagram, \angle{ABC}∠ABC = 90° = \angle{DCH}∠DCH = \angle{DOE}∠DOE = \angle{EHK}∠EHK = \angle{FKL}∠FKL = \angle{GLM}∠GLM = \angle{LMN}∠LMN

AB = BC = 2CH = 2CD = EH = FK = 2HK = 4KL = 2LM = MN


the diagram for the aboce question was in question no.2 in grometru topic test 4. i didnot understand the explanation.can any explain the solution in a detailed manner .it will be of great help