The sum of the angles around a point is 360°. Given that two angles measure 150° and 130°, we can find the third angle by subtracting the sum of the two given angles from 360°.
First, calculate the sum of the two angles:
\[ 150° + 130° = 280° \]
Next, subtract this sum from 360° to find the third angle:
\[ 360° - 280° = 80° \]
Therefore, the measure of the third angle is \( \boxed{80°} \).