Triangle Inequality Theorem Concepts

If three sides can form a triangle

If a triangle is equilateral

If three angles can form a triangle

If a triangle is right-angled

Two sides are equal

All sides are different

One side is longer than the others

All sides are equal

All angles are different

It has a right angle

Two sides are equal

All sides are equal

It must be less than the third side

It must be twice the third side

It must be equal to the third side

It must be greater than the third side

No, it only applies to equilateral triangles

Yes, it applies to all triangles

Yes, but only in special cases

No, it only applies to isosceles triangles

Check if the sum of any two sides is greater than the third

Check if the sum of any two sides is less than the third

Check if the sides are all different

Check if the sum of any two sides is equal to the third

2, 2, 5

1, 2, 8

4, 4, 8

3, 5, 7

Because 1 + 2 is not greater than 8

Because 1 + 2 is equal to 8

Because 1 + 2 is less than 8

Because 1 + 2 is greater than 8

It forms an equilateral triangle

It forms a right triangle

It forms a straight line

It forms a triangle

The sum of two sides is less than the third

The sum of two sides is equal to the third

The sum of two sides is greater than the third

The sum of two sides is twice the third