Given that these two triangles are similar, what is the measure of ∠A?

To find the measure of ∠A in similar triangles, you can use the property that corresponding angles in similar triangles are equal. If you know the measures of the other angles in the triangles, you can determine ∠A.

For example, if another angle corresponding to ∠A was stated in the problem, you could take that value. Without specific angle measures or additional information, I can’t provide the exact measure of ∠A.

Please check the triangle angle relationships provided in your question and see if that helps you to identify the correct answer among the options given (A 20°, B 35°, C 55°, D 90°). If you have further details or context, feel free to share!