How to judge whether three numbers can form a triangle Such as the title

How to judge whether three numbers can form a triangle Such as the title

The sum of any two sides is greater than that of the third side

Two triangles with equal base and height have the same area and shape______ (judge right or wrong)

Because the area formula of triangle is: area of triangle = bottom × height △ 2, although the area of triangle with equal bottom and height must be equal, the shape of triangle is not necessarily the same

Triangles with the same base and height must have the same area, but not the same shape

Triangles with the same base and height must have the same area, but not the same shape