The author posted a question in Homework
prove the parallelism of planes in a quadrilateral prism? and got a better answer
Response from Дима[+++]
square or tetrahedral?
Response from 0[+++++]
square or rectangular?
square or rectangular?
The author posted a question in Homework
prove the parallelism of planes in a quadrilateral prism? and got a better answer
Response from Дима[+++]
square or tetrahedral?