Are the faces on a pyramid always triangular? explain

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.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?