to the point that, where

[capcap23]

Why does this phrase both use relative clause and ''that'' as a conjunction like its relative ''to the extent''?

Is ''the phrase'' used with ''that'' considered to be an appositive clause or relative? If ''relative'', Why doesn't it take a preposition? I ask the same questions for the other phrase too.

Thanks.

 

[emsr2d2]

As always, please give us complete sentences to consider. Give us one sentence containing "to the point that". What is "the other phrase" to which you referred?

 

[capcap23]

As always, please give us complete sentences to consider. Give us one sentence containing "to the point that". What is "the other phrase" to which you referred?

School building have deteriorated to the point where they pose a health threat to both students and teachers.

It's gotten busier and busier, to the point that now there's a line in front almost all the time.

The other phrase is ''to the extent that, to which''.