Triangle Inequality

Can side lengths 1 cm, 2 cm, and 3 cm form a triangle?

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

Can side lengths 9 cm, 10 cm, and 11 cm form a triangle?

• Yes, they can form a triangle.
• No, because a triangle must have four sides.
• Yes, because any three numbers form a triangle.
• Yes, only if all sides are equal.

Can side lengths 7 cm, 8 cm, and 20 cm form a triangle?

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

Can side lengths 6 cm, 8 cm, and 10 cm form a triangle?

• No, because a triangle must have four sides.
• Yes, they can form a triangle.
• Yes, only if all sides are equal.
• Yes, because any three numbers form a triangle.

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.

Can side lengths 5 cm, 5 cm, and 9 cm form a triangle?

• Yes, only if all sides are equal.
• Yes, because any three numbers form a triangle.
• No, because a triangle must have four sides.
• Yes, they can form a triangle.

Can side lengths 3 cm, 4 cm, and 5 cm form a triangle?

• Yes, they can form a triangle.
• Yes, because any three numbers form a triangle.
• Yes, only if all sides are equal.
• No, because a triangle must have four sides.

Can side lengths 2 cm, 3 cm, and 6 cm form a triangle?

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

Can side lengths 2 cm, 3 cm, and 6 cm form a triangle?

• No, because triangles must have equal sides
• No, because one side is too long
• Yes, because the sum of any two sides is greater than the third side
• Yes, because all numbers are positive

Can side lengths 3 cm, 4 cm, and 5 cm form a triangle?

• No, because one side is too long
• Yes, because all numbers are positive
• Yes, because the sum of any two sides is greater than the third side
• No, because triangles must have equal sides