Origin and scale

(???????)

38.An angle that measures 90 degrees? (??????)

39.Find the diameter of a circle with a perimeter of 25? (??????)

40.Name all the sets to which the following number belongs. _{ } (??????)

41.What is the part of a line that is bounded by two points? (line segment)

42.A set of symbols that summarizes a mathematical relationship between quantities is called? (??????)

43.Lines in the same plane that do not intersect? (parallel lines)

44.To divide a figure into two congruent parts? (congruent segments)

45.Natural numbers are also called …………… numbers? (positive integers, counting numbers or natural numbers)

46.What is the radius of a circle with a circumference of 30.4 feet? (??????)

47.Of the choices below, which represents the largest prefix in the SI system? (metric or billion)

48.Solve the equation c – 8 = 11