What type of proof is used extensively in geometry? one-column proof, two-column proof, three-column proof, inductive proof or none of the above?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?