Need quick answers please

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).