Which of these triangles are possible to construct by knowing only its altitude?

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Right angled triangle

Equilateral triangle

Isosceles triangle

Any triangle

answer is B.

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Detailed Solution

By using the formula

In an equilateral triangle, all sides are the same length. Also, the length of the height or altitude is the same as the side of the triangle because it divides the side into exactly two equal parts. So we can construct this triangle only from its given height or height.
So option (2) is the correct answer.

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