Chapter 10 Flashcards
1
Q
102 arc length (degrees)
A
s = 2 pi r * angle measure/degrees
2
Q
102 arc length (radians)
A
s = angle measure in rad * r
3
Q
103 sector area (degrees)
A
A = angle measure/360 * pi r^2
4
Q
103 sector area (rad)
A
A = (r^2 * angle measure in rad)/2
5
Q
104 segment area (degrees)
A
A = angle/360 * pi r^2
- 1/2 * r^2 * sin(angle)
6
Q
104 segment area (rad)
A
A = (angle * r^2)/2
- 1/2 * r^2 * sin(angle)
7
Q
105 tangent to radius angle
A
if AB is a tangent to a circle at P, then AB is perpendicular to CP.
8
Q
106 converse for tangent-radius angle
A
if B is T to radius CP at P, then AB is tangent to circle C.
9
Q
107 segments tangent to a circle
A
if 2 segments with a common endpoint exterior to a circle are tangent to the circle, then the segments are congruent.
