pleas ehelp these are the two im very confused with

question 1: See Figure A

A) The bond angle of H-O-C1 is ____

B) the bond angle of O-C1-N is _____

C) the bond angle of C1-N-Cz is _____

Question 2: See figure C: Which of the other structures are the same as Compound Y?

Figure A HOCHHHHNC: Figure B Figure C 6