To find the sum of the measures of the interior angles at vertices I and J, we need to know the specific measures of those angles. However, if you provide the measures for the angles at those vertices, I can tell you their sum.
As currently stated, if you are looking for a numerical answer from the provided options without additional context, it's impossible to provide the correct answer just based on the options. Please provide the measures of the angles at vertices I and J or any necessary details to help resolve this.