Theorem 6.4 Maths Class 10 NCERT Theorem 6.4 If the corresponding sides of two triangles are in equal ratio then their corresponding angles are equal. Hence they are similar. Proof: This theorem is similar to theorem 6.3. There we saw that if corresponding angles of two triangles are the same then their corresponding sides are …
two triangles are similar triangles if corresponding angles of two triangles are equal. AAA similarity.
If a line dives the two sides of the triangle in equal ratio, the line is parallel to the third side of the triangle.
A line parallel to a side of the triangle divides the other sides in equal ratio.