vocab unit one? Flashcards

(44 cards)

0
Q

no dimension

represented by a dot with capital letter

A

point

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1
Q

point line plane

A

undefined term

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2
Q

1 dimension

represented by a line with two arrows on each end

A

line

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3
Q

2 dimensions

represented by a shape that looks like a floor/wall and named using three non-collinear points

A

plane

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4
Q

points on same line

A

collinear points

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5
Q

points on same plane

A

coplanar

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6
Q

terms that can be described using known words

A

undefined terms

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7
Q

consists of two end points

must be straight

A

line segment

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8
Q

consists of one end point and an extending line in the opposite direction

A

ray

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9
Q

collinear

same end point but move in opposite directions

A

opposite rays

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10
Q

set of points the figures have in common

A

intersection

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11
Q

a rule accepted without proof

used to prove theorems

A

postulate

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12
Q

same as postulate

A

axiom

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13
Q

can be mathematically proven

A

theorem

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14
Q

actual location of number

A

coordinate

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15
Q

always positive

talked about in terms of absolute value

A

distance

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16
Q

equal measure

equal sign with squiggle on top

A

congruent

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17
Q

point that divides a segment into two congruent segments (not line)

18
Q

distance formula

A

sqrt (x sub1 - x sub2)^2 + (y sub1 - y sub2)^2

19
Q

midpoint formula

A

(x sub1 + x sub2)/2 , (y sub1 + y sub2)/2

20
Q

consists of two different rays with the same end point

21
Q

made up by the rays

A

side of angle

22
Q

the endpoint of the two rays

23
Q

measure of an angle

A

always positive

24
acute angle
m <90
25
obtuse angle
m >90
26
right angle
m = 90
27
straight angle
m = 180
28
angles with the same measurement
congruent angles
29
ray that divides an angle into two congruent angles
angle bisector
30
complementary
sum is 90
31
supplementary
sum is 180
32
share the same vertex and side
adjacent angles
33
adjacent rays whose non common side sides are opposite rays
linear pairs
34
sides form two pairs of opposite rays
vertical angles
35
closed plane figure
polygon
36
segments forming polygon
sides
37
each endpoint
vertex
38
no side contains interior point
convex
39
side contains interior point
concave
40
n is number of sides of polygon
n-gon
41
all sides equal
equilateral
42
all angles equal
equiangular
43
both equilateral and equiangular
regular