Math help please 2 questions

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

How do i find the missing angle measure in a polygon