Chapter 1: Measure of an Angle Flashcards
1
Q
What is a Ray?
A
A line with a starting point; extends to infinity
2
Q
Name of origin shared by two rays?
A
Vertex
3
Q
Standard form of an angle?
A
One ray on x-axis, other ray following y-axis
4
Q
Initial line
A
On the 3 o’clock position (positive x-axis)
5
Q
Terminal line
A
Drawn anywhere to define the angle
6
Q
Common angles by 30º
A
30, 60, 90, 120, 150, 180, 210, 210, 240, 270, 300, 330, 360
7
Q
Common angles by 45º
A
45, 90, 135, 180, 225, 270, 315, 360
8
Q
Quadrants
A
12-3: QI
9-12: QII
6-9: QIII
3-6: QIV
