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Find the length of the altitude of an eq...

Find the length of the altitude of an equilateral triangle of side `2a` cm.

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The correct Answer is:
`sqrt(3)a cm`
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RS AGGARWAL-TRIANGLES-Test Yourself
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  2. In the given figure, DE||BC. If DE=5 cm, BC=8 cm and AD=3.5 cm then AB...

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  3. Two poles of height 6 meters and 11 meteras stand vertically on a plan...

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  4. The areas of two similar triangles are 25 cm^(2) and 36 cm^(2) respect...

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  5. If Delta ABC~Delta DEF such that 2AB=DE and BC=6 cm find EF.

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  6. In the given figure, DE||BC such that AD=x cm, DB=(3x+4) cm AE= (x+3)...

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  7. A ladder 10m long reaches a window 8 m above the ground. Find the d...

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  8. Find the length of the altitude of an equilateral triangle of side 2a ...

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  9. Delta ABC~DeltaDEC such that ar(Delta ABC)=64 cm^(2) and ar (Delta DE...

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  10. In a trapezium ABCD , it is given that AB||CD and AB= 2CD. Its diagona...

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  11. The corresonding sides of two similar triangle are in the ratio 2:3. I...

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  12. In the given figure, LM||CB|| and LN||CD. Prove that (AM)/(AB)=(AN)...

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  13. Prove: The internal angle bisector of an angle of a triangle divide th...

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  14. In an equilateral triangle with side a, prove that area =(sqrt(3))/(4)...

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  15. Find the length of each side of a rhombus whose diagonals are 24 cm an...

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  16. Prove that the ratio of the perimeters of two similar triangles is the...

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  17. In the given figure, Delta ABC and Delta DBC have the same base BC. I...

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  18. In the given figure, XY||AC and XY divides Delta ABC into two regions...

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  19. In the given figure, Delta ABC is an obtuse triangle, obtuse-angled at...

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  20. In the given figure, each of PA, QB and RC is perpendicular to Ac. I...

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