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Prove that sum of any two sides of a tri...

Prove that sum of any two sides of a triangle is greater than twice the median with respect to the third side.

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To prove that the sum of any two sides of a triangle is greater than twice the median with respect to the third side, we will follow these steps: ### Step 1: Define the Triangle and Median Let triangle ABC have sides AB, AC, and BC. Let AD be the median from vertex A to side BC, which means D is the midpoint of BC. ### Step 2: Extend the Median Extend the median AD to a point E such that AD = DE. This means that the length of DE is equal to the length of AD. ...
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Which of the following statements are true (T) and which are false (F)? (i) Sum of the three sides of a triangle is less than the sum of its three altitudes. (ii) Sum of any two sides of a triangle is greater than twice the median drawn to the third side. (iii) Sum of any two sides of a triangle is greater than the third side. (iv) Difference of any two sides of a triangle is equal to the third side. (v) If two angles of a triangle are unequal, then the greater angle has the larger side opposite to it. (vi) Of all the line segments that can be drawn from a point to a line not containing it, the perpendicular line segment is the shortest one.

Prove that any two sides of a triangle are together greater than twice the median drawn to the third side. GIVEN : triangle A B C in which A D is a median. PROVE : A B+A C >2A D CONSTRUCTION : Produce A D to E such that A D=D E . Join E C .

Prove that any two sides of a triangle are together greater than twice the median drawn to the third side.

Theorem 7.8 : The sum of any two sides of a triangle is greater than the third side.

Prove that the perimeter of a triangle is greater than the sum of its three medians.

If two sides of a triangle are hati+2hatj and hati+hatk , then find the length of the third side.

Prove that the sum of the sides of a quadrilateral is greater than twice of one of its diagonal.

If two side of a triangle are hat i+2 hat j and hat i+ hat k , then find the length of the third side.

Show that the difference of any two sides of a triangle is less than the third side.

Theorem 6.2 : If a line divides any two sides of a triangle in the same ratio, then the line is parallel to the third side.

NCERT EXEMPLAR ENGLISH-TRIANGLES-LONG ANSWER TYPE QUESTIONS
  1. The image of the an object placed at a point A before a plane mirror ...

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  2. ABC is an isosceles triangle with AB=AC and D is a point on ABC BC suc...

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  3. P is a point on the bisector of angle ABC .If the line through P, par...

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  4. ABCD is a quadrilateral in which AB=BC and AD =CD ,Show that BD bisect...

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  5. ABC is a right triangle with AB = AC.If bisector of angle A meet BC a...

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  6. O is a point in the interior of a square ABCD such that Delta OAB is ...

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  7. ABC and DBC are two triangle on the same base BC such that A and D lie...

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  8. In Figure, A D\ a n d\ B E are respectively altitudes of an isoscel...

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  9. Prove that sum of any two sides of a triangle is greater than twice th...

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  10. Show that in a quadrilateral ABCD AB+BC+CD+DA lt 2 (BD + AC)

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  11. Show that in a quadrilateral ABCD AB+BC+CD+DA gt AC + BD

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  12. In a Delta ABC , D is the mid point of side AC such that BD =1/2 AC. S...

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  13. In a right triangle,Prove that the line-segment joining the mid-point ...

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  14. Two lines l and m interset at the O and P is Point on a line n Passing...

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  15. The line segments joining the midpoints M and N of parallel sides AB a...

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  16. In Figure, diagonal A C of a quadrilateral A B C D bisects the angles ...

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  17. DeltaABC is a right triangle right angled at A such that AB = AC and b...

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  18. In Figure, A B\ a n d\ C D are respectively the smallest and longes...

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  19. Prove that in a triangle, other than an equilateral triangle, angle o...

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  20. If ABCD is a quadrilateral such that AB = AD and CB = CD , then prove ...

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