Prove that three times the square of any side of an equilateral-triangle is equal to four times the square of the altitude.

Prove that three xx the square of any side of an equilateral-triangle is equal to four xx the square of the altitude.

Prove that three times the sum of the squares of the sides of a triangle is equal to four times the sum of the squares of the medians of the triangle.

Prove that three times the sum of the squares on the sides of a triangle is equal to four times the sum of the square on the medians of the triangle.

Prove that three xx the sum of the squares of the sides of a triangle is equal to four xx the sum of the squares of the medians of the triangle.

Prove that three xx the sum of the squares of the sides of a triangle is equal to fourxx the sum of the squares of the medians of the triangle.

In an equilateral triangle, prove that three times the square of one side is equal to four times the square of one of its altitude.

In an equilateral triangle, prove that three times the square of one side is equal to four times the square of one of its altitudes.

In an equilateral triangle, prove that three times the square of one side is equal to four times the square of one of its altitudes.

In an equilateral triangle, prove that three times the square of one side is equal to four times the square of one of its altitudes.