" State the basic proportionality theorem."

State basic proportionality theorem.

State : Basic proportionality theorem.

State "Basic proportionality theorem"

State basic proportionality theorem and its converse.

State basic proportionality theorem and its converse.

State and prove Basic proportionality theorem

State and prove basic Proportional theorem.

Study the following figure. Write the ratios in relation to basic proportionality theorem and its corollarise, in terms of a, b, c and d.

Prove that a line joining the midpoints of any two sides of a triangle is parallel to the third side. (Using converse of basic proportionality theorem)

Prove that a line joining the midpoints of any two sides of a triangle is parallel to the third side. (Using converse of basic proportionality theorem)