ABC is a triangle. D and E are two points on AB and AC such that DE and BC are parallel. If the area of DECB is m times the area of ADE then find `(DB)/(AB)` .

ABC is a triangle. D and E are two points on AB and AC respectively such that DE is parallel to BC and AD=1 cm , BD= 2cm . What is the ratio of the area of /_\ABC to the area /_\ADE .

ABC is equilateral triangle and D,E are middle points of sides AB and AC then length of DE is

In triangle ABC,D and E are points on the sides AB and AC such that angleAED=angleC . Prove that triangleADE~triangleABC

ABC is an isosceles triangle with AB = AC and D is a point on AC such that BC^2=ACxxCD . Prove that BD = BC

ABC is a triangle of area 256 cm^2 . XY is drawn parallel to BC meeting AB at X and AC at Y. If AX:XB= 3:5 . Find the area of /_\AXY .

triangleABC and triangleDEF are two equilateral triangle such that D is the mid point of BC.The ratio of the areas of triangle ABC and BDE is

In a trapezium ABCD, AB is parallel to CD and AB = 2CD. If area of DeltaAOB = 84 cm^2 , find the area of DeltaCOD .

∆ABC is a right angled at B and D is mid-point of BC. Prove that AC^2 = 4AD^2 - 3AB^2 .

If D,E,F are the mid-point of sides AB,BC and CA respectively of triangle then the ratio of the areas of triangles triangleDEF and ABC is