How do answer question

when u see a question u want to answer click on the answer button it wont let u answer if 2 ppl already answered or if they r working on the question

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

you first to choose the points and then move from then as the slope you have