Home
Class 7
MATHS
In a triangle ABC,angleB=35^(@) and angl...

In a `triangle ABC,angleB=35^(@)` and `angleC=55^(@)`.Write of the following is true
`AC^(2)=AB^(2)+BC^(2)`
`AB^(2)=BC^(2)+AC^(2)`
`BC^(2)=AB^(2)+AC^(2)`

Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    RS AGGARWAL|Exercise EXERCISE 15-C|7 Videos

  • PROPERTIES OF PARALLEL LINE

    RS AGGARWAL|Exercise EXERCISE 14|15 Videos

  • RATION AND PROPORTION

    RS AGGARWAL|Exercise Test papers|18 Videos

Similar Questions

Explore conceptually related problems

In DeltaABC, angleC=2angle A and AC=2BC. Then which of the following is/are True ?

In a Delta ABC , angleB is an acute-angle and AD bot BC Prove that : (i) AC^(2) = AB^(2) + BC^(2) - 2 BC xx BD (ii) AB^(2) + CD^(2) = AC^(2) + BD^(2)

ABC is a triangle where BC = 2AB, angleC = 30^(@) and angleA = 90^(@) . The magnitude of the side AC is:

Draw a triangle ABC, with AC=4cm,BC=3cm and /_C=105^(@) . Measure AB. Is (AB)^(2)=(AC)^(2)+(BC)^(2)? If not,which one of the following is true: (AB)^(2)>(AC)^(2)+(BC)^(2) or (AB)^(2)<(AC)^(2)+(BC)^(2)?

Draw a triangle ABC, with AC=4cm,BC=3cm and /_C=80^(@) . Measure AB. Is (AB)^(2)=(AC)^(2)+(BC)^(2)? If not,which one of the following is true: (AB)^(2)>(AC)^(2)+(BC)^(2) or (AB)^(2)<(AC)^(2)+(BC)^(2)?

In the figure , ABC is triangle in which angleABClt90^(@)andADbotBC . Prove that AC^(2)=AB^(2)+BC^(2)-2BC*BD .

In triangleABC , angleA= 60^(@) prove that BC^(2)= AB^(2)+AC^(2)- AB . AC

In a triangle ABC,AC>AB,D is the mid- point of BC and AE perp BC .Prove that: (i) AB^(2)=AD^(2)-BCDE+(1)/(4)BC^(2)( (ii) AB^(2)+AC^(2)=2AD^(2)+(1)/(2)BC^(2)

In a triangle ABC,AC>AB,D is the mid- point of BC and AE perp BC .Prove that: (i) AC^(2)=AD^(2)+BCDE+(1)/(4)BC^(2)

RS AGGARWAL-PROPERTIES OF TRIANGLES-EXERCISE 15-D
  1. Find the length of the hypotenuse of a rigt triangle,the other two sid...

    Text Solution

    |

  2. The ypotenuse of a right trianle is 26cm long. If one of the remaining...

    Text Solution

    |

  3. The length of one side of a right triangle 4.5 cm and the length of it...

    Text Solution

    |

  4. The two legs of a right triangle are equal and the square of its hypot...

    Text Solution

    |

  5. The sides of a triangle measure 15 cm ,36cm and 39cmShow that it is a ...

    Text Solution

    |

  6. In right triangleABC the lengths of its legs are given as a=6cm and b=...

    Text Solution

    |

  7. The length of the sides of some triangles aregiven below .Which of the...

    Text Solution

    |

  8. In a triangle ABC,angleB=35^(@) and angleC=55^(@).Write of the followi...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |