Geometry Chapter 1

Front 1

Colinear Points

Back 1

points that lay on the same line

Front 2

coplanar points

Back 2

points that lie on the same plane

Front 3

defined terms

Back 3

terms that can be described using words such as point or line

Front 4

line segment

Back 4

segments with endpoints ----->
AB

Front 5

ray

Back 5

one endpoint

Front 6

opposite ray

Back 6

if c lies between a and b then ca and cb are opposite

Front 7

intersection

Back 7

a set of points the figures have in common

Front 8

potalute

Back 8

a rule in geometry excepted without proof

Front 9

coordinate

Back 9

the number that coresponds to the point.

Front 10

distance

Back 10

distance between point AB

Front 11

Between

Back 11

When two points are colinear you can say one point is between the other

Front 12

Congruent segments

Back 12

line segments with the same length

Front 13

Midpoint

Back 13

The point the segments into 2 congruent segments (average)

Front 14

Angle

Back 14

2 rays with the same endpoint

Front 15

acute

Back 15

0<x<90

Front 16

obtuse

Back 16

90<x<180

Front 17

right

Back 17

=90

Front 18

straight

Back 18

=180

Front 19

angle addition

Back 19

part angle+part angle=whole angle

Front 20

congruent angles

Back 20

two or more angles that have the same measure

Front 21

congruent segments

Back 21

two or more segments with the same measure

Front 22

bisector

Back 22

ray that divides an angle into 2 congruent angles

Front 23

complementary angles

Back 23

2 angles whoes sum is 90

Front 24

supplementary angles

Back 24

2 angles whose sum is 180

Front 25

adjacent angles

Back 25

1.comon side
2.dont overlap
3.share a vertex
4.share a common ray

Front 26

linear pair

Back 26

2 adjacent angles that form a straight line

Front 27

vertical angles

Back 27

opposite angles formed by 2 intersecting lines
*always congruent!

Front 28

convex

Back 28

A polygon with no sides that have a point in the interior of the polygon.

Front 29

concave

Back 29

not a convex

Front 30

equilateral polygon

Back 30

all sides are congruent

Front 31

equilangular

Back 31

all angles are the same

Front 32

Regular

Back 32

both equilateral and equilangular

Front 33

area of rectangle

Back 33

LxW or BxH

Front 34

Area of Parallelogram

Back 34

BxH

Front 35

Area of Square

Back 35

S^2 or LxW or BxH

Front 36

Area of triangle

Back 36

1/2BxH

Front 37

Area of Circle

Back 37

3.14r^2

Front 38

Circumfrence of Circle

Back 38

2(3.14)r or 3.14d