Videos for 10-16-17

Please watch the following videos and take notes on them in preparation for class on Tuesday 10-17-17.

tangent with perpendicular radius:

https://www.khanacademy.org/math/geometry/hs-geo-circles/hs-geo-tangents/v/example-with-tangent-and-radius

https://www.khanacademy.org/math/geometry/hs-geo-circles/hs-geo-tangents/v/proving-radius-is-perpendicular-to-tangent-line

chords intersecting:

https://www.youtube.com/watch?v=fUszhfJynd4

http://www.mathopenref.com/chordsintersecting.html

two tangents from the same point:

https://www.khanacademy.org/math/geometry/hs-geo-circles/hs-geo-tangents/v/segments-tangent-to-circle-from-outside-point-congruent