Question

2.What is the most precise name for quadrilateral ABCD with vertices A(-2,4), B(5,6), C(12,4), and D(5,2)?

Answer 1

1) The answer is B, 2) the answer is D, method just put all points and get know the graph of each quadrilateral
3) the measure of one angle in a regular n-gon is given by the following  main formula  measure of interior angle= (n-2)*180°/n,
so for n=16, we have 14*180°/16=157.5°
4) the answer is A, because 360/5=72 > 40=360/9