Chapter 1 Test

Question 1

point

Answer 1

a location in space

Question 2

line

Answer 2

set of points extending in both directions forever

Question 3

plane

Answer 3

a flat surface extending in all directions forever

Question 4

space

Answer 4

set of all points

Question 5

collinear

Answer 5

points that are on the same line

Question 6

coplanar

Answer 6

points and lines on the same plane

Question 7

equidistant

Answer 7

equal in distance

Question 8

two lines intersect at a __

Answer 8

point

Question 9

two planes intersect at a __

Answer 9

line

Question 10

segment

Answer 10

all the points between two points on a line

Question 11

ray

Answer 11

part of a line that has one endpoint and goes in one direction forever

Question 12

opposite rays

Answer 12

two rays with the same endpoint and go in opposite directions

Question 13

postulate

Answer 13

a statement that is accepted without proof

Question 14

congruent

Answer 14

two objects that have the same size and shape

Question 15

midpoint

Answer 15

a point that divides a segment into two congruent segments

Question 16

segment bisector

Answer 16

a line, ray, segment, or plane that intersects a segment at its midpoint

Question 17

segment addition postulate

Answer 17

if B is between A and C, then AB + BC = AC

Question 18

angle

Answer 18

two rays with the same endpoint

Question 19

adjacent angles

Answer 19

two coplanar angles that have a common vertex, a common side, and no common interior points.

Question 20

acute angle

Answer 20

an angle with a measure less than 90 degrees

Question 21

right angle

Answer 21

an angle with a measure equal to 90 degrees

Question 22

obtuse angle

Answer 22

an angle with a measure between 90 and 180 degrees.

Question 23

straight angle

Answer 23

an angle with a measure equal to 180 degrees

Question 24

angle bisector

Answer 24

a ray that divides an angle into two congruent adjacent angles

Question 25

theorem

Answer 25

statement that is proven

Question 26

Postulate 5

Answer 26

A line contains at least two points; A plane contains at least three noncollinear points. Space contains at least four points not on a plane.

Question 27

Postulate 6

Answer 27

Through any two points there is exactly one line.

Question 28

Postulate 7

Answer 28

Through any three points there is at least one plane, through three non collinear points there is exactly one plane.

Question 29

Postulate 8

Answer 29

If two points are in a plane, then the lines that contain the points is in that plane.

Question 30

Postulate 9

Answer 30

If two planes intersect, there intersection is a line.

Question 31

(Angle) AB + BC = AC

Answer 31

Anglular Addition Postulate

Question 32

AB + BC = AC

Answer 32

Segment Addition Postulate