Question

Pythagorean Theorem in 3-D help!!!

Answer 1

@Mehek14

Answer 2

@TheSmartOne @sleepyjess @dmndlife24 @Baby_Bear69

Answer 3

the fundamental relationship is \[HB^2 = HD^2 + DC^2 + CB^2\] so, \[HB = \sqrt{HD^2 + DC^2 + CB^2}\]
NB: the letter orders follow the natural (vector) path from H to B but CB = BC and so on as we are only concerned with actual length

and solve as you would a "normal" 2-D Pythagoreas problem, but with the extra axis.

Answer 4

Do you still need help, or does what @IrishBoy123 said make sense?