This geometry video tutorial provides a basic introduction into circle theorems. It contains plenty of examples and practice problems.

Here is a list of topics:

1. If a radius is perpendicular to a chord, it bisects the chord into two congruent segments. The point of contact is the midpoint. Therefore, the radius becomes the perpendicular bisector of the chord.

2. Radius and diameter relationships in a circle

3. Circumference of a circle

4. Area of an circle

5. Congruent Chords Theorem – if two chords are equidistant from the center of a circle, then they are congruent.

6. Major Arcs, Minor Arcs, and Semicircles

7. Central angles and arc measures

8. Secant Lines and Tangent Lines

9. A tangent line is always perpendicular to the radius of the circle

10. Two tangent theorem

11. Tangent circles – internally tangent vs externally tangent

12. Common Tangents – common internal tangent vs common external tangent

13. Central angles and inscribed angles

14. Inscribed angles in circles & intercepted arcs

15. Tangent chord angles

16. Chord chord angles

17. Tangent tangent angles

18. Secant secant angles

19. Secant tangent angles

20. Congruent arcs theorem

21. Right angles, right triangles, diameter & semicircles

22. Quadrilaterals Inscribed In a Circle

23. Opposite angles of a quadrilateral inscribed in a circle are supplementary

24. Power Theorems

25. Chord chord power theorem

26. Tangent secant power theorem

27. Secant secant power theorem

28. Arc length of a circle

29. Area of a sector of a circle

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Im very bad in math, but you really helped me a lot…now I improved.

https://youtu.be/wjA03PgwMeM

May I know which app is it, that u r using. Awasome Method.

16:03 this cant be true because since the central angle acb and dce needs to have the same angle measure as the arc ab and de so ab cant equal to 100 degrees and de equals 60 degrees.

Thank you sirr!!

I love your channel😀😃😀😃😀

Get more on circle theorems from this playlist. The link is:

https://www.youtube.com/playlist?list=PLYwM9CzPztOkE8m2zrJP_bZHEEjtzgHGX

Just curious did he cover the whole circle theorem?

THANK YOU OMG

God bless you

which software do you use to make videos

gooshhh this is my first time finishing this kind of vid cliip this maaATThh. Thanks sm i really understood it. 11/5/19 proudly say Lool

Its not a chord chord angle its a externally division of chord

Its not a tangent chord angle its a tangent secant throrem

Its not a tangent circle it is touching circles

Is this theorem is part of euclids geometry?

Thank you

thanks my brotha.

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Geometry regents in 5 days I’m scared😭