Question

Katie plots two points, K and L, on a paper and joins them using a straight line, as shown.
Which statement is true?
a) Line KL and the points K and L lie on different planes because a theorem states that a line extends on both sides of a plane.
b) Line KL and the points K and L lie on different planes because a postulate states that the measure of a straight angle is two right angles.
c) Line KL is on the same plane as the points K and L because a theorem states that a line joining two points lies on the plane containing one of the points.
(more in the comments)

Answer 1

d) Line KL is on the same plane as the points K and L because a postulate states that if two points lie in a plane then the line joining them also lies in that plane.

Answer 2

yeah D

Answer 3

it's D ?