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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
Q

Semi-circle

A

If the points are at the ends of the diameter, the arc is called a semi-circle

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26
Q

Circumference

A

The distances around a circle is called the circumference of the circle

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27
Q

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

A

Radius

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28
Q

A_______ is a segment joining two points on a circle.

A

Chord

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29
Q

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

A

Diameter

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30
Q

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

A

Arc

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31
Q

If the points at the ends of diameter, the arc is called a __________.

A

Semi-Circle

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32
Q

The distance around a circle is called the ____________ of the circle.

A

Circumference

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33
Q

An angle is formed by 2 rays with a common endpoint. The common in point is called a ______.

A

Vertex

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34
Q

Vertex

A

An angle is formed by 2 rays with a common endpoint. The common in point is called a ______.

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35
Q

Acute Angle

A

Measures between 0º and 90º

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36
Q

Right Angle

A

90º angle

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37
Q

Obtuse Angle

A

Between 90º and 180º

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38
Q

Straight Angle

A

180º angle

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39
Q

Measures between 0º and 90º

A

Acute Angle

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40
Q

90º angle

A

Right Angle

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41
Q

Between 90º and 180º

A

Obtuse Angle

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42
Q

180º angle

A

Straight Angle

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43
Q

Two angles that have a common vertex but do not “overlap” are called _______________.

A

Adjacent Angles

44
Q

Adjacent Angles

A

Two angles that have a common vertex but do not “overlap” are called _______________.

45
Q

If two lines intersect to form four congruent angles, the lines are _____________. Each of the congruent angles is a right angle (90º).

A

Perpendicular

46
Q

Perpendicular

A

If two lines intersect to form four congruent angles, the lines are _____________. Each of the congruent angles is a right angle (90º).

47
Q

Two angles whose measure have a sum of 90º are called?

A

Complementary Angles

48
Q

Complementary Angles

A

Two angles whose measures have a sum of 90º.

49
Q

Two angles whose measures have a sum of 180º are called?

A

Supplementary Angles

50
Q

Supplementary Angles

A

Two angles whose measures have a sum of 180º.

51
Q

Are vertical angles congruent?

A

Yes, because they are the same size and measure.

52
Q

Transversal Line

A

Line that intersects with 2 or more lines.

53
Q

Line that intersects with 2 or more lines?

A

Transversal Line.

54
Q

Vertex (triangle)

A

Point where the sides of a polygon intersect.

55
Q

180º-Why is this number important?

A

All sides of a triangle add up to 180º.

56
Q

Point where the sides of a polygon intersect?

57
Q

Acute

A

3 acute angles

58
Q

Right

A

1 right angel, 2 acute angles.

59
Q

Obtuse

A

1 obtuse angle, 2 acute angles.

60
Q

3 acute angles?

61
Q

1 right angle, 2 acute angles?

62
Q

1 obtuse angle, 2 acute angles?

63
Q

Scalene

A

No sides are equal

64
Q

Isosceles

A

2 sides are equal

65
Q

Equilateral

A

All sides are equal

66
Q

No sides are equal

67
Q

2 sides are equal

68
Q

All sides are equal

A

Equilateral

69
Q

Quadrilateral

A

Polygon with 4 sides, sum of angles=360º

70
Q

Square

A

Rectangle with 4 congruent sides

71
Q

Rectangle

A

Quadrilateral, 4 right angles, opposite sides are equal.

72
Q

Rhombus

A

Parallelogram where all sides are congruent.

73
Q

Trapezoid

A

1 set of parallel sides

74
Q

Polygon with 4 sides, sum of angles=360º

A

Quadrilateral

75
Q

Rectangle with 4 congruent sides

76
Q

Quadrilateral, 4 right angles, opposite sides are equal.

77
Q

Parallelogram where all sides are congruent

78
Q

1 set of parallel sides

79
Q

Formula for the Area of a Square

A

A=lw or A=s squared

80
Q

Formula for the Area of a Rectangle

81
Q

Formula for the Area of a Rhombus

82
Q

Formula for the Area of a Parallelogram

83
Q

Formula for the Area of a Trapezoid

A

A=1/2(b one+ b two)h

84
Q

Formula for the Area of a Triangle

85
Q

Formula for the Circumference of a Circle

A

C=πr squared or C=πd

86
Q

Polygon

A
  1. Closed figure.
  2. 3 or more SEGMENTS.
  3. Only 2 segments at a vertex.
87
Q

Regular

A

All sides and angles are equal.

88
Q

Triangle

89
Q

Quadrilateral

90
Q

Pentagon

91
Q

Hexagon

92
Q

Heptagon

93
Q

Octagon

94
Q

Nonagon

95
Q

Decagon

96
Q

Dodecagorn

97
Q
  1. Closed figure.
  2. 3 or more SEGMENTS.
  3. Only 2 segments at a vertex.
98
Q

All sides and angles are equal

99
Q

3 sides

100
Q

4 sides

A

Quadrilateral

101
Q

5 sides

102
Q

6 sides

103
Q

7 sides

104
Q

8 sides

105
Q

9 sides

106
Q

10 sides

107
Q

12 sides

Math (4 decks)

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