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Find in each cash whether the sides of t...

Find in each cash whether the sides of the triangle,as given below form a right triangle or not
(1) 9 cm, 12 cm and 15 cm (ii) 8 cm ,15 cm and 17 cm
(iii) 7 cm, 24 cm and 25 cm

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The correct Answer is:
(i) yes (ii) yes (iii) yes
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NAGEEN PRAKASHAN-TRIANGLES -Exercise 6d
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  3. A ladder reachs a window which is 15 metres above the ground on one si...

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  4. A man goes 40m due north and then 50m due west. Find his distance from...

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  5. The side of a rhombus is 13 cm. if one if the diagonals is 24 cm, find...

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  6. In the adjoining figure: anglePSQ= 90^(@) , PQ= 10 cm , QS = 6cm and R...

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  7. ABC is a isosceles right angled triangle, right angled at C. prove tha...

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  8. triangleABC is an isosceles triangle with AC = BC. If AB^(2)= 2AC^(2) ...

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  9. In an equilateral triangleABC, AD is the altitude drawn from A on the ...

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  10. M and N are the points on sides QR and PQ respectively of a trianglePQ...

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  11. In a square ABCD, show that AC^(2) = 2AB^(2).

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  12. In a rhombus ABCD, prove that AC^(2) + BD^(2) = 4AB^(2)

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  13. In triangle ABC, angleA = 90^(@) , CA= AB and D is a point on AB pordu...

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  14. The following figure shows a triangle ABC in which AD is a median and ...

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  15. From a point O in the interior of a A B C , perpendiculars O...

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  16. In a right triangle ABC, right angled at A, AD is drawn perpendicular ...

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  17. In the given figure , ABC is a right triangle, right angled at B. Medi...

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  18. In the given figure , angleQPR= 90^(@) QR = 26 cm PM = 6cm, MR = 8c...

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  19. Given a right angled triangleABC. The lengths of the sides containing ...

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

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