It explains a wide range from the basics of high school mathematics to university entrance exam questions.
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Janusz
办美国文凭加拿大文凭澳洲文凭英国文凭学位证毕业证成绩单
Veinas bọt EPE máy móc
Wendy Ye
![[Prime factorization] How to find prime factors](https://img.youtube.com/vi/IGs2fTmIkOo/mqdefault.jpg "[Prime factorization] How to find prime factors")
![[Radius of a circle] Conditions for tangent to the chord and circumference](https://img.youtube.com/vi/E4c9ZxqXoJQ/mqdefault.jpg "[Radius of a circle] Conditions for tangent to the chord and circumference")
![[Volume of a Tetrahedron] Using the Vertical](https://img.youtube.com/vi/DwCrcoysCMw/mqdefault.jpg "[Volume of a Tetrahedron] Using the Vertical")
![[Radius of circumscribed sphere] Another solution by a viewer](https://img.youtube.com/vi/l1WkEVogYDg/mqdefault.jpg "[Radius of circumscribed sphere] Another solution by a viewer")
![[Radius of a circumscribed sphere] Making full use of sine and cosine](https://img.youtube.com/vi/K8yDGOxtD4c/mqdefault.jpg "[Radius of a circumscribed sphere] Making full use of sine and cosine")
![[Plane figures] What do you mean by parallel lines?](https://img.youtube.com/vi/xMDufjoTCCs/mqdefault.jpg "[Plane figures] What do you mean by parallel lines?")
![[Proof] Of course that's the case (laughs)](https://img.youtube.com/vi/_ZH-uCFYSac/mqdefault.jpg "[Proof] Of course that's the case (laughs)")
