Jeff made a small flag that is shaped like a triangle. The flag has side lengths of 5 inches, 12 inches, and 13 inches. Jeff wants to describe the flag to his friend so she can make one also.

Select all statements about the flag that are true.

A. The flag is a scalene, right triangle.

B. The flag is an isosceles, acute triangle.

C. The sum of the angle measures of Jeff's flag is 180 degrees.

D. There are an infinite number of different triangular flags that can be made with the same dimensions.​