Thales Theorem

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.

Basic-Proportionality-Theorem
Basic-Proportionality-Theorem-1
Thales Theorem

thales theorem

triangle proportionality theorem proof

thales theorem proof

thales' theorem

proportionality theorems

basic proportionality theorem

converse of triangle proportionality theorem proof

thales triangle