An integral triangle is a triangle with positive integral side-lengths and a positive area. Such a triangle can have a perimeter as small as 3 . What is the next smallest possible perimeter of an integral triangle?
A.
4
B.
5
C.
6
D.
7
Exam No：2018 First Round Grade 5 Year：2018 Question No：33
Answer:
B
Knowledge points:
G5 - Geometry - Triangle Inequality (Validation & Application)
Solution:
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