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Honors Geometry > Lessons 1-1, 1-2, 1-3 Vocab > Flashcards

Lessons 1-1, 1-2, 1-3 Vocab Flashcards

1
Q

Undefined Term

A

A figure that cannot be defined by other figures

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2
Q

Point

A

A point names a location.

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3
Q

Line

A

A straight path that extends forever

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4
Q

Plane

A

A flat surface that extends forever

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5
Q

Segment

A

The part of a line consisting of two points and all points between them.

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6
Q

Endpoint

A

A point at one end of a segment / starting point of a ray

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7
Q

Ray

A

A part of a line that starts at an endpoint

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8
Q

Opposite Rays

A

Two rays that have a common endpoint and form a line

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9
Q

Collinear

A

Points that lie on the same line

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10
Q

Coplanar

A

Points that lie on the same plane.

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11
Q

Coordinate

A

A point that corresponds to a number on a ruler

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12
Q

Length

A

Distance between 2 points; the absolute value of them.

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13
Q

Congruent Segments

A

Segments with the same length

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14
Q

Construction

A

A figure with precise measurements

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15
Q

Midpoint

A

The point that bisects (divides) the segment

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16
Q

Segment Bisector

A

A ray, segment, or line that intersects a segment.

17
Q

Angle

A

Figure formed by 2 rays

18
Q

Vertex

A

A common endpoint of an angle

19
Q

Interior Angle

A

All points between the sides of an angle

20
Q

Exterior Angle

A

All points outside the angle

21
Q

Measure

A

Usually given in degrees

22
Q

Degree

A

1/360 of a circle

23
Q

Acute Angle

A

0-90 degrees

24
Q

Right Angle

A

90 degrees

25
Q

Obtuse Angle

A

90-180 degrees

26
Q

Straight Angle

A

180 degrees

27
Q

Congruent Angles

A

Angles with the same measure

28
Q

Angle Bisector

A

Ray that divides an angle into two congruent angles

Honors Geometry (5 decks)

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