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(创新题) Which of the following groups cann...

(创新题) Which of the following groups cannot form a triangle(三角形)?________

A.30°, 60°, 90° B.120°, 100°, 20° C.75°, 75°, 30° D.60°, 60°, 60°

 

B 【解析】 句意:下列哪一组角不可以构成一个三角形?根据数学知识可知,三角形的内角和为180度。A、C、D三项数学之和均为180,只有B项不行。故选B。  
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