Geometry Vocab 1-11

Front 1

line segment

Back 1

piece of line between 2 points

Front 2

ray

Back 2

a lije which starts at one poit and goes forever in one direction

Front 3

plane

Back 3

colimear points on the same line

Front 4

complementary

Back 4

2 <'s that sums up to equal 90 degree

Front 5

supplementary

Back 5

2 <'s that sums up to equal 180 degree

Front 6

adjacent angles

Back 6

pairs of angles that share a vertex and one side but do not overlap

Front 7

vertical angles

Back 7

opposite angles formed by two intersecting lines

Front 8

adjacent and supplementary

Back 8

linear pair - line between two angle

Front 9

linear pair

Back 9

pair of adjacent angles non common sides arr opposites

Front 10

transformations

Back 10

function that changes the position shape size

Front 11

rigid transformations

Back 11

change position only

Front 12

non rigid transformation

Back 12

change size shape position

Front 13

pre image

Back 13

figure that is used as the input of a transformation

Front 14

image

Back 14

output

Front 15

reflection

Back 15

a transformation across a line

Front 16

rotation

Back 16

transformation about a point ( turn)

Front 17

translation

Back 17

slide, ponts of a figure move the same distance in same direction

Front 18

colinear points

Back 18

points that lie on the same line

Front 19

coplaner points

Back 19

points that lie in the same plane

Front 20

inductive reasoning

Back 20

process of reasoning that a rule or statement is true because specific cases are true

Front 21

conjecture

Back 21

a prediction of how pattern will continue based on your observation

Front 22

deductive reasoning

Back 22

the process of logic to draw conclusions from given facts definition properties

Front 23

law of detachment

Back 23

if p->q is a true statement and p is true then the q is true

Front 24

law of syllogism

Back 24

if p->q and q->r are true statements then p -> r is true

Front 25

proof

Back 25

logical argument that uses sequnece of statements to prove a conjecture

Front 26

theorem

Back 26

any statement that you can proove

Front 27

postulate

Back 27

statement that is accepted as true without proof

Front 28

inductive

Back 28

counyer example pattern of observation

Front 29

parallel

Back 29

two or more lines that never cross

Front 30

perpendicular

Back 30

2 lines which cross at right angles

Front 31

slew lines

Back 31

not coplaner not parallel do not intersect

Front 32

parallel planes

Back 32

planes that do not intersect

Front 33

alternate

Back 33

opposite sides of transversal

Front 34

same side

Back 34

same side of the transversal

Front 35

converse

Back 35

statement you get when switch the hypo and the conclusion of a conditional statement

Front 36

coincident lines

Back 36

2 lines that are really the same line

Front 37

coordinate proof

Back 37

proof that uses coordinate axes and algebra

Front 38

bisector

Back 38

line that cuts through middle of an object

Front 39

perpendicular bisector

Back 39

line that bisects a line segment whichbis perpendicular to the line segment

Front 40

point of concurrency

Back 40

point where 3 or more lines intersect

Front 41

circumcenter

Back 41

when 3 perpendicular bisector cross

Front 42

circumcircle

Back 42

circle that is circumscribed around the triangle

Front 43

circumscribed

Back 43

circle around the shape

Front 44

medians of triangle

Back 44

line segment connecting a vertex to the midpoint of the opposite side

Front 45

orthocenter

Back 45

where 3 altitudes meet

Front 46

altitiude

Back 46

line segment perpendicular side of traingle connects to opposite vertx

Front 47

polygon

Back 47

closed plane shape made up of atleast 3 line segments that intersect only their endpoits

Front 48

regular polygon

Back 48

a polygon all sides are equal

Front 49

convex

Back 49

jutting , bending , turning outward

Front 50

concave

Back 50

turning inward

Front 51

diagonals

Back 51

line segment from one vertext to a nonadjacent vertext

Front 52

quadrilateral

Back 52

polygon with 4 sides

Front 53

parallelogram

Back 53

quadrilateral with 2 pairs of parallel side

Front 54

rhombus

Back 54

parallelogram with congruent sides

Front 55

trapezoid

Back 55

quadrilateral with only one pair of parallel sides

Front 56

isosceles trapezoid

Back 56

trapezoid with congruent height

Front 57

kites

Back 57

a quadrilateral with 2 pairs of consecutive congruent side

Front 58

similar polygon

Back 58

2 polygons arr similar if they have the exact same shape but not the same size