A triangle is formed by joining three points whose coordinates are integers. If the x-unit and the y-unit are each 1 cm, then the area of the triangle, in sq. cm:

must be an integer

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may be irrational

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must be irrational

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must be rational

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will be an integer only if the triangle is equilateral

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Solution

The correct option is D must be rational
As co-ordinates are integers, So length is also integer then area must be Rational .

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A triangle is formed by joining three points whose coordinates are integers. If the x-unit and the y-unit are each 1 cm, then the area of the triangle, in sq. cm:

The correct option is D must be rationalAs co-ordinates are integers, So length is also integer then area must be Rational .

The correct option is D must be rational
As co-ordinates are integers, So length is also integer then area must be Rational .