What is the hypothesis of the statement below?

If two triangles are isosceles right triangles,then they are similar.

The hypothesis is that "the right angle is formed by the equal sides of each isosceles triangle."

If the hypothesis is not true, we do not have a properly formed triangle.

The hypothesis of the statement is "two triangles are isosceles right triangles."

The hypothesis of the statement is the condition that needs to be met in order for the statement to be true. In this case, the hypothesis is "If two triangles are isosceles right triangles." It states the specific condition that must be true for the rest of the statement to hold, which is that both triangles being compared need to be isosceles right triangles.