I am trying to recall the title of a children's activity book from the late 70's. It was themed as a space military training manual, 8.5×11 inches, about 3/8 inch thick. Not directly linked to any major sci-fi franchise that i recall.
The space fighters inside had pyramidal noses, rectangular prism bodies with two tube engines, and the wing extensions were right trapezoids, with the short base joined to the wing over the engines.
The paper stock wasn't great, i recall. It was available in the US. Binding was softcover, either glue binding or perfect binding.
The conceit was that it was an academy workbook... Many of the activities cloaked real world practical aviation and technical skills in sci-fi, such as identifying fighter direction based upon the orientation of the lights, and symbolic coding & decoding. Plus maps of ships as mazes.
In response to a (now deleted answer) No, it wasn't linked to any major TV IP's. It was not linked to BSG, Star Wars, Star Trek, Space Academy/Jason of Star Command, nor Space 1999.