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The length of the sides of some triangle...

The length of the sides of some triangles aregiven below .Which of them are right angled?
a=15cm, b=20 cm and c=25 cm
a=9 cm, b=12 cm and 16 cm
a=10 cm, b=24 cm and c=26cm

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RS AGGARWAL-PROPERTIES OF TRIANGLES-EXERCISE 15-D
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  8. In a triangle ABC,angleB=35^(@) and angleC=55^(@).Write of the followi...

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  9. A 15-m long ladder is placed against a wall to reach a window 12 m hig...

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  10. A 5-m long ladder when set against the wall of a house reaches a heigh...

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  11. एक पेड़ भूमि से 5m की ऊंचाई पर टूट जाता है और उसका ऊपरी सूरा भूमि को उस...

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  12. Two poles 18m and 13 m high stand upright in a playground If their fee...

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  13. A man goes 35m due west and then 12 m due north. How far is he from th...

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  14. A man goes 3 km due north and then 4 km due east.How far is away from ...

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  15. Find the length of diaonal of the rectangle whose sides are 16 cm and ...

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  16. Find the perimeer of the rectangle whose length is 40 cm and diagonal ...

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  17. Find the perimeter of a rhombus ,the lengths of whose diagonal are 16c...

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  18. Fill in the blanks: In a right triangle,the square of the hypotenuse i...

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