yeah, ten was like wtf.. especially (b)
8 (b) ii) for the BD=EH, the traingles are congurnet (SAS).. i got the third part as
<EBH=<BAD
say let <BAD=x
<ABC=180-x
then there was the angles adding up to 360, revolution, so ...
<EBH =360 - 90 - 90 - <ABC
<EBH =360 - 90 - 90 - (180-x)...