Inside a cube

This task is about finding right angles on a cube.

Question 1Change answer

Inside-cube-diagram.png
Many triangles can be drawn by connecting any 3 corners of a cube,
for example, the corners A, E, and G are connected to make triangle AEG. 
 
For each triangle below circle whether or not it is a right-angled triangle.
Triangle Right-angled triangle?
AEG YesNo
AEH YesNo
ABC YesNo
ACH YesNo
ABH YesNo
BDE YesNo
BDF YesNo
DEG YesNo
BDG YesNo
BFG YesNo