(1)直角三角形之構件介紹

https://www.youtube.com/watch?v=-T4_rO1w4U0

(2)直角三角形之斜邊上的高_

https://www.youtube.com/watch?v=2zr7MDgIS4s

(3)勾股定理之介紹

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

(4)勾股定理之推導

https://www.youtube.com/watch?v=NK465QL33yc

(5)常見的直角三角形之三邊長比─勾股數

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

(6)利用勾股定理求直角坐標平面上兩點的距離_

https://www.youtube.com/watch?v=nAb13o5a9bQ

國二上_2-3勾股定理

https://www.youtube.com/watch?v=QWiE0yOTkjw&list=PL776FF86864B02BDF&index=7