Question

Mark any three non - collinear points A, B and C. Join them to form a triangle. Draw $\overleftrightarrow {PQ}$ passing through A and parallel to $\overleftrightarrow {BC}$.

Answer 1

Process :

1) Mark any three non - collinear points A, B and C.
2) Join the three non collinear points to form a triangle.
3) Draw a line parallel to $\overleftrightarrow {PQ}$ .

From this,

Arises a theorem called Basic proportionality theorem.

The theorem says, If a line is drawn parallel to one side of the triangle, and the other two sides are divided in the same ratio.

$\frac{AP} {PB} = \frac{AQ} {QC}$

Hope helped!

Answer 2

Answer:

i don't understand the answer