Basic Proportionality Theorem: Part 3

All the best.

[sajidkhan]

12:34 in think to find ratios of area of these two small triangles we can represent x in terms of z. We can draw two parallel lines crossing from vertex a and b and now as we can see that the CA is also a transversal crossing through the same paralle lines we can get the that AC will will be divided into 2 halves with measure 2z. Thus the height ratio for 2 triangles came be found out as 1:2.