For a complete lesson on tangents and circles, go to http://www.yourteacher.com – 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn the following theorems related to tangents. If a line is tangent to a circle, then the line is perpendicular to the radius at the point of tangency. If a line is perpendicular to a radius at its outer endpoint, then the line is tangent to the circle. If two tangent segments are drawn to a circle from an external point, then the tangent segments are congruent. Students are then asked to use these theorems to find missing segment lengths and missing angle measures in given figures. Students also learn the definitions of common internal tangents and common external tangents.
25 Responses to Tangents and Circles – YourTeacher.com – Geometry Help
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NASA's Sentinels of the Heliosphere
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@OfficialAla
Don’t mean to be disrespectful but she’s a teacher too. If you’re saying you should fire every teacher just cos you don’t learn from yours, then you’re being a little bit ridiculous. The place where /you/ get your education from may be terrible, but that doesn’t mean everyone else’s is. Perhaps you should think before you start ranting?
@OfficialAla i agree. i have learned more here then in class
Its neat that I can learn more effectively from a 3 minute video than from an entire chapter in my book.
i learn more from mathxl than my teacher
These comments make me feel like i’m actually in class haha
but she does stare at the screen awkwardly… o__O
wtf! is she’s robot or something?
I’m here because I’m amazed by her handwriting.
Thanks because i don’t understand a word coming out of my geometry teachers mouth lol
!!!!
WHERE THE HECK WERE YOU GUYS WHEN I WAS IN HIGHSCHOOL???
((((
lukisan kejuruteraan
i feel so dumb not knowing this….
My geometry teacher need to be fired…
@Deeharok well how do you expect me to pay attention when my teachers can’t even teach?
@OfficialAla maybe if you payed attention in class?
@metalmilitia137 No, you just like to learn, but you are a nerd if you like to learn and NOT play video games
Am I nerd because I think this stuff is interesting and not annoying?
Gimme a chance to teach this.EASY question
it aint this hard people.really this aint math
whar did the circle say to Pi? “hey man, dont be so irrational!”
Straight lines aren’t hard to draw for a robot…
This helped a lot. By the way, nice straight lines.
perfect handwriting
DEAR ALL SCHOOL PRINCIPLES, PLEASE FIRE EVERY SINGLE TEACHER AT SCHOOL! & Hire Youtube and Google. (; I think all us students can agree we learn MORE FROM THEM than we do from the teachers at school that can barely teach. Isn’t is sad enough that we have to go ONLINE to find help instead of the place we get our education from? YOUTUBE AND GOOGLE teach me more than school does! Sincerely, pissed off students.
Creepiest stare I’ve ever seen on any videos in YouTube…
Thanks,now I’m more confidient to take the geometry regents.