Did you miss the information that the student is 8 years old?
No, I wrote it for Dave -- who asked the question -- to read and understand, step by step, then translate to whatever form is appropriate and best for the 8 year old.
Thanks, but it's not like I couldn't solve it, I just had absolutely no idea what "linear pairs of angles" were, never heard the term before. Anyway, Sagan answered all but one of the questions.
Anyway, Sagan answered all but one of the questions.
Sagan looks like one gifted boy.