Which formula correctly defines the perimeter of a triangle with sides a, b, and c?

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Multiple Choice

Which formula correctly defines the perimeter of a triangle with sides a, b, and c?

Explanation:
Perimeter is the total distance around a figure, so you add every side once. For a triangle with side lengths a, b, and c, that means p = a + b + c. The other expressions would include extra terms or subtract a non-existent segment, which doesn’t match the actual boundary length. So p = a + b + c is the correct formula.

Perimeter is the total distance around a figure, so you add every side once. For a triangle with side lengths a, b, and c, that means p = a + b + c. The other expressions would include extra terms or subtract a non-existent segment, which doesn’t match the actual boundary length. So p = a + b + c is the correct formula.

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