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Calculate the height of an equilatera...

Calculate the height of an equilateral triangle each of whose sides measures 12cm.

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RD SHARMA ENGLISH-TRIANGLES-All Questions
  1. Each side of a rhombus is 10cm. If one of its diagonals is 16cm fin...

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  2. In an acute angled triangle , express a median in term of its sides.

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  3. Calculate the height of an equilateral triangle each of whose sides...

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  4. In right-angled triangle A B C in which /C=90^@ , if D is the ...

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  5. In Fig. 4.220, D is the mid-point of side B C and A E|B C . If B...

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  6. In Fig. 4.221, /B<90o and segment A D|B C , show that b^2=h^2+a^...

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  7. In A B C , /A is obtuse, P B|A C and Q C|A B . Prove that: A BxxA ...

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  8. In a right A B C right-angled at C , if D is the mid-point of B...

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  9. In a quadrilateral A B C D , /B=90^o , A D^2=A B^2+B C^2+C D^2 , pro...

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  10. In an equilateral A B C , A D|B C , prove that A D^2=3\ B D^2

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  11. A B D is a right triangle right-angled at A and A C|B D . Show t...

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  12. A guy wire attached to a vertical pole of height 18m is 24m long an...

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  13. An aeroplane leaves an airport and flies due north at a speed of 10...

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  14. In each of the figures [4.222 (i)-(iv)] given below, a line segment...

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  15. In A B C , points P and Q are on C A and C B , respectively s...

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  16. In Figure, D E || C B . Determine A C and A E .

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  17. In Figure, given that /\ A B C ~ /\ P Q R and quad\ ABCD ~ quad\ PQRS...

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  18. In A B C , P and Q are points on sides A B and A C respectively s...

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  19. In each of the following figures, you find two triangles. Indicate ...

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  20. In /\ P Q R , M and N are points on sides P Q and P R respectively ...

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