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Section 4.1 Vocabulary

Name_____________________________

Period________
Across
The position after rotation is the _________ side.
A second way to measure angles, aside from radians, is in _______
You determine the _______ of an angle by the amount of rotation from the initial side to the terminal side.
An angle in which the origin is the vertex and the initial side coincides with the positive x-axis is said to be in _________ position.
The side next to the angle in a right triangle
An angle of _________ represents the angle from the horizontal downward to an object
Two positive angles are ______________ when their sum is pi/2
Angles between 0 and pi/2
A function is ____ when f(-t) = f(t)
Derived from Greek language, this word means "measurement of triangles."
The starting position of the ray is the _______ side of the angle.
To define a radian, you can use a ________ angle of a circle, one whose vertex is the center of the circle.
Down
The endpoint of the ray is the ______ of the angle.
Angles between pi/2 and pi
Clockwise rotation generates _________ angles.
________ speed = central angle divided by time
The acute angle formed by the terminal side of an angle and the horizontal axis
Angles that have the same initial and terminal sides
Two positive angles are _____________ when their sum is pi
A function is ___ when f(-t) = -f(t).
______ speed = arc length divided by time
A(n) is determined by rotating a ray (half-line) about its endpoint.
An angle of _________ represents the angle from the horizontal upward to an object
The side across from the angle in a right triangle
Counterclockwise rotation generates _________ angles
One ______ is the measure of a central angle that intercepts an arc s equal in length to the radius r of the circle.
A(n) _______ of a circle is the region bounded by two radii of the circle and their intercepted arc.