A central angle has a measure of 82O. What is the measure of the inscribed angle that subtends it?

Consider the equation of a line given by

Consider the equation of a line given by 

Which describes an edge to edge tiling?

Which describes a chord?

Consider a polygon with n = [a] sides. What is the sum of the interior angles? Enter just the numeric value below. Do NOT include the unit of measurement. 

An inscribed  angle has a measure of 82O. What is the measure of the central angle that subtends it?

Consider a circle with a radius of r = 5 in and a central angle of 120O. What is the arc length created by this central angle? Write your as a fraction in simplest form, leaving

Consider the ellipse with a horizontal axis of 16 and a vertical axis of 12. Which of the following is the graph of this ellipse?

Consider an ellipse with a horizontal axis of 10 and a vertical axis of 20. When  , what does   equal? Round your answer to one decimal place and enter just the numeric value below.