Chap. 1 Vocabulary

Question 1

_____ angles are two angles whose measures have a sum of 90 degrees

Answer 1

complementary

Question 2

_____ angles are two angles whose sides are opposite rays

Answer 2

vertical

Question 3

_____ angles are two angles whose measures have a sum of 180 degrees

Answer 3

supplementary

Question 4

If two segments have the same length, then the segments are _____ _____

Answer 4

congruent segments

Question 5

Angles with the same measure are _____ angles.

Answer 5

congruent

Question 6

A point, line, ray, or other segment that intersects a segment at its midpoint is called a _____ _____.

Answer 6

segment bisector

Question 7

An _____ _____ is between 90 and 180 degrees.

Answer 7

obtuse angle

Question 8

_____ _____ are two rays that share the smae ndpoint and form a line

Answer 8

opposite rays

Question 9

Points and lines that lie in the same plane are _____.

Answer 9

coplanar

Question 10

An _____ _____ is between 0 and 90 degrees.

Answer 10

acute angle

Question 11

A _____ _____ is a pair of adjacent angles whose noncommon sides are opposite rays.

Answer 11

linear pair

Question 12

A _____ indicates a location and has no size.

Answer 12

point

Question 13

The real number tha corresponds to a point is called the _____ of the point.

Answer 13

coordinate

Question 14

A _____ is a two-dimensional diagram that you can fold to form a three-dimensional figure.

Answer 14

net

Question 15

A _____ is part of a line that consists of one endpoint and all the points of the line on one side of the endpoint.

Answer 15

ray

Question 16

When you have two or more geometric figures, their _____ is the set of points the figures have in common.

Answer 16

intersection

Question 17

The endpoint is the _____ of the angle.

Answer 17

vertex

Question 18

The _____ between points A and B is the absolute value of the difference of their coordinates.

Answer 18

distance

Question 19

Points that lie on the smae line are _____ _____.

Answer 19

collinear points

Question 20

A _____ is represented by a straight path that extends in two opposite directions without end and has no thickness, containing infinitely many points.

Answer 20

line

Question 21

An _____ is formed by two rays with the same endpoint.

Answer 21

angle

Question 22

A _____ is part of a line that consists of two endpoints and all points between them

Answer 22

segment

Question 23

The _____ of a segment is a point that divides the segment into two congruent segments.

Answer 23

midpoint

Question 24

A _____ _____ is equal to 180 degrees

Answer 24

straight angle

Question 25

An _____ _____ is another way to represent a three-dimensional figure, showing a top view, a front view, and a right-side view.

Answer 25

orthographic drawing

Question 26

_____ angles are two coplanar angles with a common side, a common vertex, and no common interior points.

Answer 26

adjacent

Question 27

A _____ _____ is equal to 90 degrees.

Answer 27

right angle

Question 28

A _____ is represented by a flat surface that extends without end and has no thickness, containing infinitely many lines.

Answer 28

plane

Question 29

_____ is the set of all points in three dimensions.

Answer 29

space

Question 30

An _____ _____ shows a corner view of a three-dimensional figure.

Answer 30

isometric drawing

Question 31

The rays are _____ of the angle.

Answer 31

sides

Question 32

A _____ or _____ is an accepted statement of fact.

Answer 32

axiom, postulate

Question 33

An _____ _____ is a ray that divides an angle into two congruent angles.

Answer 33

angle bisector

Question 34

A _____ _____ of a segment is a line, segment, or ray that is perpendicularto the segment at its midpoint.

Answer 34

perpendicular bisector

Question 35

The _____ of a polygon is the sum of the lengths of its sides

Answer 35

perimeter

Question 36

A _____ is a geometric tool used to draw circles and parts of circles called arcs.

Answer 36

compass

Question 37

A _____ is a geometric figure drawn using a straightedge and a compass.

Answer 37

construction

Question 38

The _____ of a polygon is the number of square units it encloses.

Answer 38

area

Question 39

____ _____ are two lines that intersect to form right angles.

Answer 39

perpendicular lines

Question 40

A _____ is a ruler with no markings on it.

Answer 40

straightedge