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Asked by Pranav Satti

Sep 1, 2014

In an equilateral Î” ABC, the side BC is trisected at D. Prove that 9AD2 = 7AB2

In this solution triangle ABC and ACE is taken in place of ABC, ABE should be taken.

Asked by Swetcha

Aug 9, 2013

D,E,F are respectively th mid-points of the sides AB,BC and CA of Î”ABC. Find the ratios of the area of Î”DEF and Î”ABC.

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Asked by Vaishali mathur Mathur

Aug 18, 2013

Prove that the sum of the squares of the diagonals of parallelogram is equal to the sum of squares of its sides.

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Asked by Tonykuttan

Aug 27, 2014

Prove that the area of the equilateral triangle described on the side of a square is half the area of the equilateral triangle describes on its diagonal.

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Asked by Harshit

Aug 7, 2013

Prove that the sum of squares of of the sides of a rhombus is equal to the sum of its squares of its diagonals

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Asked by Adithyan Sanal

Apr 14, 2015

Prove that in a triangle, if the square of one side is equal to the sum of the squares of the other two sides, then the angle opposite to the first side is a right angle.

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Asked by Rohit

Sep 6, 2014

Two poles having heights of 6m and 11m stand vertically on a plane ground. if the distance between their feet is 12m, Find the distance between their tops.

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Asked by Malavika Ramesh

Sep 18, 2014

in a triangle ABC right angled at A, AB=5 cm and AC=12 cm. If AD perpendicular BC then find AD.

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Asked by Fakkufakir Mohammed Mubarak Shaik

Sep 9, 2014

in triangle abc if AD is the median then show that ABÂ²+ACÂ²= 2[ADÂ²+BDÂ²]

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Asked by Gajaanan Muley

Aug 10, 2013

AD is an altitude of an equilateral triangle ABC. On AD as a base,another equilateral triangle ADE is constructed.Prove that area(ADE):area(ABC)=3:4.

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