it filled the building with a terrible smell
True, if the triangles had two obtuse angles, they would exceed the 180 degrees. The third angle would have no degrees!
Because the HIV virus takes time to multiply and get established. Person might have been infected, but it not show up in tests for some time.
The goal of the Obama administration in US was to revive the economy, provide affordable and accessible health care to all, strengthen public education and social security systems. Also, one of his goals is to clear path to energy independence and to discuss climate change.