You're showing your ignorance again.<quoted text>
A massive chunk of the trade tower fell on WTC7. If you did any homework, you would not ask such a stupid question. After the collapse, anyone could see the size of those chunks.
WTC buildings #3, 4 & 5 were right next to the towers and they were heavily damaged and they did not collapse. Building 7 was a football field away and had very minor damage. Besides NIST said building 7 fell due to normal office fires.