CHAPTER-6 TRIANGLES (SET-1)

Questions in this test

1. A vertical stick 20 m long casts a shadow 10m long on the ground. At the same time, a tower casts a shadow 50 m long on the ground, the height of the tower is.
2. Sides of 2 similar triangles are in the ratio 4:9 Areas of the triangles are in the ratio
3. The areas of two similar triangles are $9cm^2$ and $16cm^2$ respectively, the ratio of their sides is ______
4. The areas of two similar △ABC and △DEF are $144cm^2$ and $81cm^2$ respectively. If the longest side of larger ABC be 36 cm, then the longest side of the smaller triangle, △DEF is
5. △ ABC and △BDE are two equilateral triangles such that triangle is the midpoint of BC, the ratio of the areas of △ABC and △BDE is
6. Two isosceles triangles have equal angles and their areas are in the ratio 16: 25, the ratio of their height is
7. If △ABC and △DEF are similar such that 2AB=DE and BC= 8cm, then EF =
8. If △ABC and △ DEF are 2 triangles such that $\frac{AB}{DE}=\frac{BC}{EF}=\frac{CA}{FD}=\frac{2}{5},$ then ar $(△ABC)$ : ar $(△DEF)$=
9. △ABC is such that AB= 3cm, BC= 2 cm, and CA= 2.5 cm, If △DEF & △ABC and EF=4 cm, then the perimeter of △DEF is
10. XY is drawn || to the base BC of a triangle ABC Cutting AB at x and AC at y, If AB= 4BX and YC= 2cm, then AY=