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Seems that the book has an error. You are right, they should correct that.

In the drawing it can be seen that those two z-axis are indeed parallel. I recommend that you considered them parallel and try to draw them to see that it fits with the image.

Seems that the book has an error. You are right, they should correct that.

Seems that the book has an error. You are right, they should correct that.

In the drawing it can be seen that those two z-axis are indeed parallel. I recommend that you considered them parallel and try to draw them to see that it fits with the image.

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Seems that the book has an error. You are right, they should correct that.