This diagram shows a Convex Polygon, what is the value of B?

The answer to your question is letter D. 128°

Step-by-step explanation:

Process

1.- Find the angles inside the triangle

- The 82° angle and the one next to it are supplementary, then they measure 180°

                       82° + x = 180°

                                x = 180° - 82°

                                x = 98°

- The angle of 150° and the one next to it are also supplementary, then they measure 180°.

                     150° + x = 180°

                                x = 180 - 150°

                                x = 30°

- The sum of the internal angles in a triangle measures 180°

                       98° + 30° + z = 180°

                                z = 180° - 98° - 30°

                                z = 52°

- Angle z and angle b are supplementary, so

                       52° + b = 180

                                 b = 180 - 52°

                                 b = 128°

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step-by-step explanation:

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i believe the answer is the polygon, heptagon.