1.1 points lines and planes

Question 1

concepts that are so basic it is impossible to write a definition that does not refer to the term being defined

Answer 1

undefined terms

Question 2

a point at an end of a segment or the starting point of a ray

Answer 2

endpoint

Question 3

a part of a line that starts at an endpoint and extends forever in on direction

Answer 3

ray

Question 4

part of a line consisting of two endpoints and all points between them

Answer 4

line segment

Question 5

a measure of the length of the shortest line segment that would connect them

Answer 5

distance

Question 6

lie on the same line

Answer 6

collinear

Question 7

lie in the same plane

Answer 7

coplanar

Question 8

a statement that is accepted as true without proof

Answer 8

postulate

Question 9

two segments that have the same length

Answer 9

congruent

Question 10

to divide it into congruent parts

Answer 10

bisect

Question 11

the point that bisects the segment into two congruent segments

Answer 11

midpoints

Question 12

names a location

Answer 12

point

Question 13

names a straight path of points in a plane

Answer 13

line

Question 14

a flat surface

Answer 14

plane