Help me or not i have 10 points to offer

1. are the triangles similar and if so why? what is the value of x? show your work.

Which expression is equivalent to sq-80

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.