Total angle of a hexagon=720 degrees
152+85+125+135+85=582 degrees
720-582=138
The missing angle is 138 degrees.
Which is not a property of mathematical proofs?
Conclusion has nothing to do with math
it is for writeing.
Greater than because the line is dashed and the shaded region is in the positive or less negative numbers area. Greater than or equal would be the same but with a solid line.
