A figure is shown. ![](http://admin.getprephub.com/media/editor/Screenshot%202023-04-25%20at%204.37.32%20PM_20230425143801093962.png) What is the measure, in degrees, of the missing angle?

Answer ![](http://admin.getprephub.com/media/editor/Screenshot%202023-04-25%20at%204.37.39%20PM_20230425143953131026.png) $$m \angle A C B=50^{\circ}$$ [Vertically opposite angle] , $$m \angle B A C=90^{\circ}$$ In $$\triangle A B C$$, $$m \angle A B C+m \angle B A C+m \angle A C B=180^{\circ}$$ $$m \angle A B C=180-50-90=40^{\circ}$$

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A figure is shown.

What is the measure, in degrees, of the missing angle?

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