Help ? Pls

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.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

An object in geometry with no width, length or height is a(n):