Chapter 2

Question 0

Ray

Answer 0

The ray AB consists of the initial point a and all points on line AB that lie on the same side of a as B lies

Question 1

Line segment

Answer 1

Segment AB consists of the endpoints a and B all-points on the line AB that lie between a and B

Question 2

Opposite rays

Answer 2

On the line AB, if C is between a and B then CA and CB are opposite rays

Question 3

Collinear

Answer 3

Points, segments, or rays on the same line

Question 4

Angle

Answer 4

Consists of two different rays that have the same initial point. the rays are the sides of the angle and the initial point is the vertex of the angle

Question 5

Interior of an angle

Answer 5

A point that lies between the sides of the angle

Question 6

Exterior of an angle

Answer 6

A point that is not on or inside of the angle

Question 7

Adjacent angle

Answer 7

Two angles are adjacent if they share a common vertex and side but have no common interior points

Question 8

Congruent segments

Answer 8

Two segments that have the same length

Question 9

Congruent angles

Answer 9

Two angles that have the same measure

Question 10

Segment bisector

Answer 10

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

Question 11

Angle bisector

Answer 11

A ray that divides the angle into two congruent angles

Question 12

Perpendicular lines

Answer 12

Two lines that intersect to form a right angle

Question 13

A line is perpendicular to a plane if..

Answer 13

If it is perpendicular to each line in the plane that intersects it

Question 14

Postulate 5

Through any two distinct points…

Answer 14

Through any two distinct points there exists exactly one line

Question 15

Post 6 a line contains…

Answer 15

At least two points

Question 16

Post 7 through any three noncollinear points…

Answer 16

There exists exactly one plane

Question 17

Post 8 a plane contains…

Answer 17

At least three points

Question 18

Post 9 if two distinct points lie in a plane…

Answer 18

Then the line containing them lies in the plane

Question 19

Post 10 if two distinct planes intersect…

Answer 19

Them their intersection is a line

Question 20

Vertical angles

Answer 20

Two angles whose sides form two pairs of opposite rays

Question 21

Linear pair

Answer 21

Two adjacent angles whose noncommon sides are opposite rays

Question 22

Complementary angles

Answer 22

Two angles are complementary if the sum of their measures is 90°

Question 23

supplementary angles

Answer 23

Two angles are supplementary if the sum of the angles equals 180°

Question 24

Linear pair postulate

Answer 24

If two angles form a linear pair then they are supplementary

Question 25

Congruent supplements theorem

Answer 25

If two angles are supplementary to the same angle or congruent angles than they are congruent

Question 26

Congruent complements theorem

Answer 26

If two angles are complementary to the same angle or congruent angles then they are congruent

Question 27

Vertical angles theorem

Answer 27

If two angles are vertical angles then they are congruent