Which of the following inequalities is not true? |-9| ≠ |9|
-2 2 < 3
-7 ≤ -5
|-1| ≥ 0

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?