G.G-C.B.5

Code Standard Coding: 
G.G-C.B.5
Code Standard standard: 

Derive, using similarity, the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector. Convert between degrees and radians.

Code Standard Domain: 
Circles (G-C)
Code Standard Cluster: 
G.G-C.B Find arc lengths and areas of sectors of circles.
Code Standard Conceptual Category: 
Geometry - G
Code Standard Course: 
Geometry
Is this Mathematics?: 
yes
Is this ELA?: 
no