Answer:
YES
Explanation:
The sum of the lengths of any two sides of a triangle is greater than the length of the third side.
12 + 6 is bigger than 9
12 +9 is bigger than 6
9+6 is bigger than 12
yes
Sides: a = 6 b = 9 c = 12
Area: T = 26.143
Perimeter: p = 27
Semiperimeter: s = 13.5
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