I need math help awesome people!
In the rectangular prism, side IJ is parallel to side GF. If the measure of angle EAJ is 40°, then what is the measure of the dihedral angle that is formed between plane ADIJ and plane ABCD?

Question

I need math help awesome people!
In the rectangular prism, side IJ is parallel to side GF. If the measure of angle EAJ is 40°, then what is the measure of the dihedral angle that is formed between plane ADIJ and plane ABCD?

anonymous · Answer

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jim_thompson5910 · Answer

This is a rectangular prism, so each face is a rectangle

this means that each angle (of each face) is 90 degrees

so angle EAB = 90 degrees

anonymous · Answer

Thank you thank you thank you so so much! you are awesome!

jim_thompson5910 · Answer

angle EAJ + angle JAB = angle EAB

the dihedral angle you want is angle JAB

anonymous · Answer

Oh okay thanks!

jim_thompson5910 · Answer

yw