Basic Proportionality Theorem or Thales Theorem
Basic Proportionality Theorem. Before we understand what Basic proportionality theorem states, we need to understand a few basics of similarity of triangles first. Even though students get answer for this question on internet, they do not understand exactly what has been explained. To make the students to understand the proof of this theorem clearly, we have given step by step explanation.
Statement: If a line is drawn parallel to one side of a triangle intersecting the other two sides, then it divides the two sides in the same ratio.
Given: A triangle ABC in which DE || BC, and intersects AB in D and AC in E.
https://www.aplustopper.com/basic-proportionality-theorem-or-thales-theorem/
https://drive.google.com/drive/u/0/folders/1mgHVv1f1Cj9NilpEXde-p4vgKDQtJorN
https://sites.google.com/site/ncertsolutionssite/basic-proportionality-theorem-or-thales-theorem
https://mycbsetut.blogspot.com/2019/01/basic-proportionality-theorem-or-thales.html
https://trello.com/c/ggVvhKSM/83-basic-proportionality-theorem-or-thales-theorem
https://sarkariresultworld.wordpress.com/2019/01/14/basic-proportionality-theorem-or-thales-theorem/
https://plus.google.com/u/0/+SafiaCBSE/posts/b5W53Yoiy6A
https://twitter.com/safiacbse/status/1084763892318822400
https://solutions-ncert.tumblr.com/post/182002155049/basic-proportionality-theorem-or-thales-theorem
https://www.pinterest.co.uk/pin/635500197397513530/