Rachel
About
Khan Academy on a Stick
Parts of a Circle
Parts of a Circle
Circles
Language and Notation of the Circle
Circles: Radius, Diameter and Circumference
Length of an arc that subtends a central angle
Finding central angle measure given arc length
Parts of a Circle
Area of a Circle
Area of a sector given a central angle
Inscribed and Central Angles
Perpendicular Radius Bisects Chord
Right Triangles Inscribed in Circles (Proof)
Area of Inscribed Equilateral Triangle (some basic trig used)
Your browser does not support video. Please get the latest version of Google Chrome, Firefox, IE, or Safari. Alternately, you can try the link below if you have VLC or another media player installed.
If the above player doesn't work, you can
try this direct link
.