You are most likely thinking of a futon. Sometimes they are called a folding sofa bed, sleep sofa, sleeper couch or sleeping couch. Ones that have a metal folding mechanism are called click clack sleeper sofas.
Futons
You get 84 folds if you fold each paper into halves. You get 168 folds if you fold each paper into fourths. How did I figure this out? Well, 42x2(half)=84 folds. Also, 42x4(fourth)= 168 folds> I hope this was the answer you were looking for.
Your vocal folds (also called the ventricular folds) are toward the top of your larynyx, protecting your vocal chords. These folds help prevent you from breathing in solids. A very interesting effect is produced when you sing and you get these folds to vibrate. They will vibrate at half the speed of your vocal chords, and produce a sound an octave lower than the note you are singing with your vocal chords. This sounds much like a foghorn or a prolonged burp. The people most noted for producing this effect, theTuvans, call this effect kargyraa.
one the trapezoid only folds in half
Simple answer: a casket with a split top (divided lid).
Easiest way is to make a cut out of the image and determine if it folds in half. The crease made by folding in half is the line of symmetry.
There is no fixed sequence.
one half of everyone? no thats not posipal lol but srsly no
You call them a person.
Depends on how big the couch is. At most it would take 2 or 3 hides for a small couch; at least half a dozen for a larger couch.
only 1 thats half time
Your vocal folds (also called the ventricular folds) are toward the top of your larynyx, protecting your vocal chords. These folds help prevent you from breathing in solids. A very interesting effect is produced when you sing and you get these folds to vibrate. They will vibrate at half the speed of your vocal chords, and produce a sound an octave lower than the note you are singing with your vocal chords. This sounds much like a foghorn or a prolonged burp. The people most noted for producing this effect, theTuvans, call this effect kargyraa.