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Geometry Vocb. Flashcards

1
Q

The 3 undefined terms

A

Point, line, plane

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2
Q

To determine a line

A

2 points

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3
Q

Collinear points

A

2 or more points on the same line

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4
Q

Coplanar points

A

Points in the same plane

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5
Q

Line segment

A

2 points on a line and all points in between

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6
Q

Endpoints

A

Points at the end of a segment or a ray

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7
Q

Congruent

A

Figures that have the same size and measure

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8
Q

Midpoint

A

The point that divides a segment into 2 congruent segments

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9
Q

Ray

A

Part of a line with 1 endpoint. Always name from point

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10
Q

To determine a plane

A

3 points to determine a plane

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11
Q

Point, line, plane

A

The 3 undefined terms

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12
Q

2 points

A

To determine a line

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13
Q

2 or more points on the same line

A

Collinear points

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14
Q

2 points on a line and all points in between

A

Line segment

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15
Q

Points at the end of a segment or a ray

A

Endpoints

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16
Q

Figures that have the same size and measure

A

Congruent

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17
Q

The point that divides a segment into 2 congruent segments

A

Midpoint

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18
Q

Part of a line with 1 endpoint. Always name from endpoint

A

Ray

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19
Q

3 points

A

To determine a plane

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20
Q

Center

A

A circle is a set of points equidistant from a given point called the center

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21
Q

Radius

A

A radius is a segment joining the center of a circle and a point on the circle

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22
Q

Chord

A

A chord is a segment joining two points on a circle

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23
Q

Diameter

A

If the chord passes through the center of the circle, then the chord is called a diameter

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24
Q

Arc

A

Two points on a circle and the part of the circle between them form an arc

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25
Semi-circle
If the points are at the ends of the diameter, the arc is called a semi-circle
26
Circumference
The distances around a circle is called the circumference of the circle
27
A _______ is a segment joining the center of a circle and a point on the circle.
Radius
28
A_______ is a segment joining two points on a circle.
Chord
29
If the chord passes through the center of the circle, then the chord is called a ______.
Diameter
30
Two points on a circle and the part of the circle between them form an ___.
Arc
31
If the points at the ends of diameter, the arc is called a __________.
Semi-Circle
32
The distance around a circle is called the ____________ of the circle.
Circumference
33
An angle is formed by 2 rays with a common endpoint. The common in point is called a ______.
Vertex
34
Vertex
An angle is formed by 2 rays with a common endpoint. The common in point is called a ______.
35
Acute Angle
Measures between 0º and 90º
36
Right Angle
90º angle
37
Obtuse Angle
Between 90º and 180º
38
Straight Angle
180º angle
39
Measures between 0º and 90º
Acute Angle
40
90º angle
Right Angle
41
Between 90º and 180º
Obtuse Angle
42
180º angle
Straight Angle
43
Two angles that have a common vertex but do not “overlap” are called _______________.
Adjacent Angles
44
Adjacent Angles
Two angles that have a common vertex but do not “overlap” are called _______________.
45
If two lines intersect to form four congruent angles, the lines are _____________. Each of the congruent angles is a right angle (90º).
Perpendicular
46
Perpendicular
If two lines intersect to form four congruent angles, the lines are _____________. Each of the congruent angles is a right angle (90º).
47
Two angles whose measure have a sum of 90º are called?
Complementary Angles
48
Complementary Angles
Two angles whose measures have a sum of 90º.
49
Two angles whose measures have a sum of 180º are called?
Supplementary Angles
50
Supplementary Angles
Two angles whose measures have a sum of 180º.
51
Are vertical angles congruent?
Yes, because they are the same size and measure.
52
Transversal Line
Line that intersects with 2 or more lines.
53
Line that intersects with 2 or more lines?
Transversal Line.
54
Vertex (triangle)
Point where the sides of a polygon intersect.
55
180º-Why is this number important?
All sides of a triangle add up to 180º.
56
Point where the sides of a polygon intersect?
Vertex
57
Acute
3 acute angles
58
Right
1 right angel, 2 acute angles.
59
Obtuse
1 obtuse angle, 2 acute angles.
60
3 acute angles?
Acute
61
1 right angle, 2 acute angles?
Rigth
62
1 obtuse angle, 2 acute angles?
Obtuse
63
Scalene
No sides are equal
64
Isosceles
2 sides are equal
65
Equilateral
All sides are equal
66
No sides are equal
Scalene
67
2 sides are equal
Isosceles
68
All sides are equal
Equilateral
69
Quadrilateral
Polygon with 4 sides, sum of angles=360º
70
Square
Rectangle with 4 congruent sides
71
Rectangle
Quadrilateral, 4 right angles, opposite sides are equal.
72
Rhombus
Parallelogram where all sides are congruent.
73
Trapezoid
1 set of parallel sides
74
Polygon with 4 sides, sum of angles=360º
Quadrilateral
75
Rectangle with 4 congruent sides
Square
76
Quadrilateral, 4 right angles, opposite sides are equal.
Rectangle
77
Parallelogram where all sides are congruent
Rhombus
78
1 set of parallel sides
Trapezoid
79
Formula for the Area of a Square
A=lw or A=s squared
80
Formula for the Area of a Rectangle
A=lw
81
Formula for the Area of a Rhombus
A=bh
82
Formula for the Area of a Parallelogram
A=bh
83
Formula for the Area of a Trapezoid
A=1/2(b one+ b two)h
84
Formula for the Area of a Triangle
A=1/2bh
85
Formula for the Circumference of a Circle
C=πr squared or C=πd
86
Polygon
1. Closed figure. 2. 3 or more SEGMENTS. 3. Only 2 segments at a vertex.
87
Regular
All sides and angles are equal.
88
Triangle
3 sides
89
Quadrilateral
4 sides
90
Pentagon
5 sides
91
Hexagon
6 sides
92
Heptagon
7 sides
93
Octagon
8 sides
94
Nonagon
9 sides
95
Decagon
10 sides
96
Dodecagorn
12 sides
97
1. Closed figure. 2. 3 or more SEGMENTS. 3. Only 2 segments at a vertex.
Polygon
98
All sides and angles are equal
Regular
99
3 sides
Triangle
100
4 sides
Quadrilateral
101
5 sides
Pentagon
102
6 sides
Hexagon
103
7 sides
Heptagon
104
8 sides
Octagon
105
9 sides
Nonagon
106
10 sides
Decagon
107
12 sides
Dodecagon

Math (4 decks)

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