Chapter 9 Flashcards

1
Q

Point

A

An exact location in space

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2
Q

Ray

A

Part of a line that continues without end in two opposite directions and the other end has one endpoint

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3
Q

Line

A

A straight path continuing without end in two different directions

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4
Q

Line segment

A

Part of a line with two endpoints

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5
Q

Vertex

A

Point at which two line segments or rays meet to form an angle

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6
Q

Degrees

A

A unit of an angle measure.

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7
Q

Protractor

A

Instrument used for measuring angles

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8
Q

Acute angle

A

A angle less than 90 degrees

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9
Q

Obtuse angle

A

An angle more than90 degrees

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10
Q

Right angle

A

90 degrees

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11
Q

Straight angle

A

180 degrees

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12
Q

Turn

A

A turn at: 90, 180, 270, 360 degrees

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13
Q

Inner scale

A

Inner set of numbers

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14
Q

Outer scale

A

The outer numbers

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