+288 Can someone check these two answers because they are one sentence and I feel like I need an explanation.
https://web2.0calc.com/questions/area_16
https://web2.0calc.com/questions/angles-question_2
As always... -------Thanks! 
Btw I'm only asking this because there's a topic about Guests posting one sentence answers (The topic was from Melody and I think this might be the Guest.)
