Chapter 1

Question 1

is made up pf points and lines, has no thickness or width. exactly one through two points

Answer 1

line

Question 2

flat surface made of 3 or more points. extends infinitely in all directions. made of 3 non co-lin points

Answer 2

plane

Question 3

a line with 2 distinct endpoints

Answer 3

line segment

Question 4

part of a line that has one endpoint. extends infinitely in one direction.

Answer 4

ray

Question 5

two collinear rays that form a line

Answer 5

opposite rays

Question 6

Points that lie on the same line

Answer 6

Co-linear points

Question 7

Points that do not lay on the same line

Answer 7

non co-linear points

Question 8

Set of all the points two geometric figures have in common

Answer 8

Intersection

Question 9

2 lines that never intersect

Answer 9

parallel lines

Question 10

boundless, 3 dimensional set of all points. can contain lines and points

Answer 10

space

Question 11

points that lie on the same plane

Answer 11

coplanar points

Question 12

points that do not lie on the same plane

Answer 12

non co-planar points

Question 13

all of the elements in a combined set

Answer 13

union

Question 14

2 lines that intersect at exactly 1 point and form a right angle

Answer 14

perpendicular lines

Question 15

Notate: point X

Answer 15

X

Question 16

Notate: line G

Answer 16

cursive lowercase g

Question 17

Notate: Line RG

Answer 17

RG

Question 18

Notate: Collinear points M, N, O

Answer 18

co-lin M,N,O

Question 19

Notate: non collinear points A,B,C

Answer 19

non co-lin A,B,C

Question 20

Notate: Plane F

Answer 20

Uppercase, Cursive, F

Question 21

notate: plane HTB

Answer 21

Plane HTB

Question 22

Notate: Coplanar Points V,W,X

Answer 22

Co-pl V,W,X

Question 23

Notate: Non co-planar C, D, E, F

Answer 23

non co-pl C, D, E, F

Question 24

Notate: Segment PQ

Answer 24

PQ

Question 25

if PM+ MQ= PQ, M is (between, preceding) points P and Q

Answer 25

between

Question 26

segments that have the same measure. slashes on figures denote this

Answer 26

congruent segments

Question 27

the point halfway between the endpoints of a segment

Answer 27

midpoint

Question 28

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

Answer 28

segment bisector

Question 29

Midpoint Formula on a Number Line

Answer 29

(x1+x2)/2

Question 30

Midpoint formula in a coordinate plane

Answer 30

((x1+x2)/2, (y1+y2)/2)

Question 31

The length of the segment between two endpoints

Answer 31

Distance between two points

Question 32

Distance Formula on a Number Line

Answer 32

|x2-x1|

Question 33

Distance Formula

Answer 33

SQUARE ROOT OF... | (x2-x1)^2+ (y2-y1)^2

Question 34

A location, neither shape nor size

Answer 34

point

Question 35

Is formed by 2 noncollinear rays that have a common endpoint

Answer 35

Angle

Question 36

Decribe how to name an angle.

Answer 36

Three letters, vertex is ALWAYS in the middle. Can be named by number if given or vertex only if it is the only angle formed by the vertex

Question 37

Sides of an angle

Answer 37

2 rays that make up an angle

Question 38

Vertex

Answer 38

Common endpoint of an angle

Question 39

Acute Angle

Answer 39

angle with a measure less than 90*

Question 40

Right angle

Answer 40

Angle with measure of 90*

Question 41

Angle with measure over 90*, less than 180*

Answer 41

Obtuse Angle

Question 42

Straight angle

Answer 42

Angle with a measure of 180*

Question 43

Congruent Angles

Answer 43

Angles with the same measure

Question 44

Angle bisector

Answer 44

A ray that divides an angle into two congruent angles

Question 45

Complementary Angles

Answer 45

Angles with measures that add up to 90*

Question 46

Supplementary Angles

Answer 46

Angles with measures that add up to 180*

Question 47

Adjacent Angles

Answer 47

Two angles that lie in the same plane and share a common vertex and a common side, but have NO common interior points

Question 48

Linear pair

Answer 48

Two adjacent angles with a sum of 180*

Question 49

Vertical Angles

Answer 49

two nonadjacent angles formed by two intersecting lines

Question 50

Vertical Angles are (always, sometimes, never) congruent

Answer 50

always

Question 51

Perpendicular Lines, Congruent Angles, and Congruent Segments (can, cannot) be assumed

Answer 51

Cannot

Question 52

Polygon

Answer 52

Closed Figure in a plane that is formed by 3 or more line segments. No two sides are collinear

Question 53

Vertex of a Polygon

Answer 53

Where two sides of the polygon meet

Question 54

Convex Polygon

Answer 54

No line that contains a line of the polygon also contains an interior point of the polygon

Question 55

Concave Polygon

Answer 55

If a line that DOES contain a side of the polygon also contains an interior point. CAVES in.

Question 56

Equilateral Polygon

Answer 56

Occurs if all sides are congruent

Question 57

Equiangular Polygon

Answer 57

Occurs if all angles are congruent

Question 58

Regular Polygon

Answer 58

Polygon that is - equilateral - equiangular - convex

Question 59

Irregular Polygon

Answer 59

Not a regular polygon

Question 60

Polygon with 3 sides

Answer 60

Triangle

Question 61

Polygon with 4 sides

Answer 61

Quadrilateral

Question 62

Polygon with 5 sides

Answer 62

Pentagon

Question 63

Polygon wth 6 sides

Answer 63

Hexagon

Question 64

Polygon with 7 sides

Answer 64

Heptagon

Question 65

Polygon with 8 sides

Answer 65

Octagon

Question 66

Polygon with 9 sides

Answer 66

nonagon

Question 67

Polygon with 10 sides

Answer 67

Decagon

Question 68

Polygon with 12 sides

Answer 68

Dodecagon

Question 69

Polygon with n sides

Answer 69

n-gon

Question 70

Area of a triangle

Answer 70

(1/2)bh

Question 71

Perimeter of a triangle

Answer 71

b+c+d

Question 72

Perimeter of a square

Answer 72

4s

Question 73

Area of a square

Answer 73

s^2

Question 74

Perimeter of a rectangle

Answer 74

2l+2w

Question 75

Area of a rectangle

Answer 75

lw

Question 76

Circumference of a circle

Answer 76

2πr

Question 77

Area of a circle

Answer 77

πr^2