Write negation of:
If triangle is equilateral then it is isosceles.

If triangle is equilateral then it is not isosceles.

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If triangle is not equilateral then it is not isosceles.

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If triangle is isosceles then it is not equilateral.

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The triangle is equilateral and it is not isosceles.

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Solution

The correct option is D The triangle is equilateral and it is not isosceles.
Given,
$p \to q$
$p \to$ triangle is equilateral.
$q \to$ it is isosceles.
$\sim (p \to q)$ $\equiv p \land \sim q$
$\Rightarrow$ The triangle is equilateral and it is not isosceles.

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Similar questions

Write the contrapositive of the statement.

'If a triangle is equilateral, then it is isosceles'.

△ A B C

Question 46

State whether the statements are true or false:

If an isosceles triangle has more than one line of symmetry, then it need not be an equilateral triangle.

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