Chapter 9 Flashcards
1
Q
Point
A
An exact location in space
2
Q
Ray
A
Part of a line that continues without end in two opposite directions and the other end has one endpoint
3
Q
Line
A
A straight path continuing without end in two different directions
4
Q
Line segment
A
Part of a line with two endpoints
5
Q
Vertex
A
Point at which two line segments or rays meet to form an angle
6
Q
Degrees
A
A unit of an angle measure.
7
Q
Protractor
A
Instrument used for measuring angles
8
Q
Acute angle
A
A angle less than 90 degrees
9
Q
Obtuse angle
A
An angle more than90 degrees
10
Q
Right angle
A
90 degrees
11
Q
Straight angle
A
180 degrees
12
Q
Turn
A
A turn at: 90, 180, 270, 360 degrees
13
Q
Inner scale
A
Inner set of numbers
14
Q
Outer scale
A
The outer numbers
