Which of the following triangles is not equilateral?

A triangle with sides 3 cm, 3 cm, 3 cm

A triangle with sides 4 cm, 4 cm, 2 cm

A triangle with sides 5 cm, 5 cm, 5 cm

A triangle with sides 6 cm, 6 cm, 6 cm

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Q1.

What is the minimum number of sides required to construct a triangle?

Q2.

If the sides of a triangle are 5 cm, 12 cm, and 13 cm, can you construct this triangle?

Q3.

When constructing an equilateral triangle with a side length of 6 cm, which tool is NOT necessary?

Q4.

How can you check if three lengths can form a triangle?