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Honors Geometry > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

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

A

line

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2
Q

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

A

plane

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3
Q

a line with 2 distinct endpoints

A

line segment

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4
Q

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

A

ray

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5
Q

two collinear rays that form a line

A

opposite rays

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6
Q

Points that lie on the same line

A

Co-linear points

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7
Q

Points that do not lay on the same line

A

non co-linear points

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8
Q

Set of all the points two geometric figures have in common

A

Intersection

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9
Q

2 lines that never intersect

A

parallel lines

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10
Q

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

A

space

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11
Q

points that lie on the same plane

A

coplanar points

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12
Q

points that do not lie on the same plane

A

non co-planar points

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13
Q

all of the elements in a combined set

A

union

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14
Q

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

A

perpendicular lines

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15
Q

Notate: point X

A

X

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16
Q

Notate: line G

A

cursive lowercase g

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17
Q

Notate: Line RG

A

RG

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18
Q

Notate: Collinear points M, N, O

A

co-lin M,N,O

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19
Q

Notate: non collinear points A,B,C

A

non co-lin A,B,C

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20
Q

Notate: Plane F

A

Uppercase, Cursive, F

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21
Q

notate: plane HTB

A

Plane HTB

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22
Q

Notate: Coplanar Points V,W,X

A

Co-pl V,W,X

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23
Q

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

A

non co-pl C, D, E, F

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24
Q

Notate: Segment PQ

A

PQ

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25
Q

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

A

between

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26
Q

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

A

congruent segments

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27
Q

the point halfway between the endpoints of a segment

A

midpoint

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28
Q

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

A

segment bisector

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29
Q

Midpoint Formula on a Number Line

A

(x1+x2)/2

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30
Q

Midpoint formula in a coordinate plane

A

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

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31
Q

The length of the segment between two endpoints

A

Distance between two points

32
Q

Distance Formula on a Number Line

33
Q

Distance Formula

A

SQUARE ROOT OF…

(x2-x1)^2+ (y2-y1)^2

34
Q

A location, neither shape nor size

35
Q

Is formed by 2 noncollinear rays that have a common endpoint

36
Q

Decribe how to name an angle.

A

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

37
Q

Sides of an angle

A

2 rays that make up an angle

38
Q

Vertex

A

Common endpoint of an angle

39
Q

Acute Angle

A

angle with a measure less than 90*

40
Q

Right angle

A

Angle with measure of 90*

41
Q

Angle with measure over 90, less than 180

A

Obtuse Angle

42
Q

Straight angle

A

Angle with a measure of 180*

43
Q

Congruent Angles

A

Angles with the same measure

44
Q

Angle bisector

A

A ray that divides an angle into two congruent angles

45
Q

Complementary Angles

A

Angles with measures that add up to 90*

46
Q

Supplementary Angles

A

Angles with measures that add up to 180*

47
Q

Adjacent Angles

A

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

48
Q

Linear pair

A

Two adjacent angles with a sum of 180*

49
Q

Vertical Angles

A

two nonadjacent angles formed by two intersecting lines

50
Q

Vertical Angles are (always, sometimes, never) congruent

51
Q

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

52
Q

Polygon

A

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

53
Q

Vertex of a Polygon

A

Where two sides of the polygon meet

54
Q

Convex Polygon

A

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

55
Q

Concave Polygon

A

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

56
Q

Equilateral Polygon

A

Occurs if all sides are congruent

57
Q

Equiangular Polygon

A

Occurs if all angles are congruent

58
Q

Regular Polygon

A

Polygon that is

  • equilateral
  • equiangular
  • convex
59
Q

Irregular Polygon

A

Not a regular polygon

60
Q

Polygon with 3 sides

61
Q

Polygon with 4 sides

A

Quadrilateral

62
Q

Polygon with 5 sides

63
Q

Polygon wth 6 sides

64
Q

Polygon with 7 sides

65
Q

Polygon with 8 sides

66
Q

Polygon with 9 sides

67
Q

Polygon with 10 sides

68
Q

Polygon with 12 sides

69
Q

Polygon with n sides

70
Q

Area of a triangle

71
Q

Perimeter of a triangle

72
Q

Perimeter of a square

73
Q

Area of a square

74
Q

Perimeter of a rectangle

75
Q

Area of a rectangle

76
Q

Circumference of a circle

77
Q

Area of a circle

Honors Geometry (9 decks)

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