Inside a rectangular prism

This task is about finding right angles on a rectangular prism.
rectangular-prism.png
a)  Build the rectangular prism shown above using the sticks and blu-tack on the corners
     and label the corners as shown by sticking paper to blu-tack on the corners.
 
 

 Show the model to your teacher before doing part b).

Question 1Change answer

b)  Select "Yes" if the triangle is a right angled triangle, otherwise select "No".

     Your model will help you decide.
Triangle
Is the triangle Right-angled?
(Select one)
i)     ADH YesNo
ii)    EHG YesNo
iii)   BCH YesNo
iv)   BFE YesNo
v)    EDG YesNo
vi)   CAE YesNo
vii)  AFG YesNo
viii) CHA YesNo
ix)   EBG YesNo
x)    CDE YesNo