Answer: $\boxed{50}$Step-by-step explanation:Step 1: Identify the given angle measure. (m∠1 = 130°)Step 2: Determine the relationship between the angles.To determine the measure of ∠?, we need to know its relationship to ∠1. Common relationships include supplementary (180°), complementary (90°), or corresponding angles.Step 3: Assume a common relationship for illustration. If ∠1 and ∠? are supplementary, then m∠? = 180° - m∠1.Step 4: Calculate the measure of ∠? If supplementarym∠? = 180° - 130° = 50 °