I need the answer ASAP no rocky

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Which of the following contains a variable?