Arcs and Central Angles - YourTeacher.com - Geometry Help

For a complete lesson on arcs and central angles, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn the definition of a central angle, and that the measure of a central angle is equal to the measure of its intercepted arc. Students also learn the definitions of a minor arc, a major arc, a semicircle, adjacent arcs, and congruent arcs. Students also learn the arc addition postulate, and are asked to find the missing measures of arcs and angles in given figures using the concepts introduced in this lesson.

Category:

Education

Tags:

• central
• angle
• angles
• circle
• circles
• arc
• measure

[cristel1445]

wow...this lesson was so difficult for me...but now, i am finding it so easy...and it's all because of you...thank you very much...you are really a great help...

[patriciamarylaine08]

OMFG where have you been for all my life! THANK YOU ! i find it simple now !

[NabbyDudeX3]

I just want to let you know that you`re my hero.

[jennylicious1996]

That's our lesson in math earlier.

[IvanderHaisley]

@ttham11223344 oh yeah .. i get it .. you mean to say an accurate triangle that being illustrated ... i have one of those problem too -_- . like an inscribed angle on a circle having an angle measuring "50º" and when i got a protractor it measured 85 º /.. definitely inaccurate :D

[ttham11223344]

@IvanderHaisley But only a perfectly accurate triangle can have accurate angles. I see what you mean. I didn't mean as in the perfect triangle but a perfectly drawn triangle.

[IvanderHaisley]

@ttham11223344 its not "perfect" ... a triangle must have a sum of all internal angle equivalent to 180º

[ttham11223344]

@ivantot017 The perfect triangle must have 180 degrees in total

[ivantot017]

wer the fuck 180 cme from?? plz

[AutumnxDay]

I liked the circle help with the algebra is so slow.. x + x is 2x... ;O WOW.. so hard.. >.>

[OfficialAla]

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.

[1355atlantis]

she is so cute x