standard_description: Use coordinates to prove simple geometric theorems algebraically. For example, prove or disprove that a figure defined by four given points in the coordinate plane is a rectangle; prove or disprove that the point (1, Ö3) lies on the circle centered at the origin and containing the point (0, 2).
problem_activity: [IMG]
Determine the polygon described by the given system of inequalities. Explain your reasoning.
Find the perimeter. Round your answer to the nearest tenth.
Find the area in simplest radical form.


aligns: yes