With the angles given below, in which case the construction of triangle is possible?
- A$30^\circ , 60^\circ , 70^\circ$
- ✓$50^\circ , 70^\circ , 60^\circ$
- C$40^\circ , 80^\circ , 65^\circ$
- D$72^\circ , 28^\circ , 90^\circ $
Answer: B.
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