Triangle Inequality 4-7-12 » MCQ Academy

Geometry

Can side lengths 4 cm, 7 cm, and 12 cm form a triangle?

Yes, because any three numbers form a triangle.
No, they cannot form a triangle.
Yes, because the longest side is always allowed.
No, because every triangle must be equilateral.

Yes, because any three numbers form a triangle.
No, they cannot form a triangle.
Yes, because the longest side is always allowed.
No, because every triangle must be equilateral.

Note

Use the triangle inequality rule: the two shorter sides must add to more than the longest side. Here, 4 + 7 is not greater than 12, so a triangle is not possible.

Tags: Triangle Inequality, Triangles

Note

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