# Geometry

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name the integer values of x that form a triangle with 12-x, 12, 12+x

• Geometry -

Any side of a triangle must be positive:
12-x>0
x<12

The sum of any two sides must be greater than the third. In this case,
12-x + 12 > 12+x
=>
24-x > 12 + x
=>
x < 6

Also,
12+12+x > 12-x
2x>-12
x>-6

Therefore the conditions are that
-6<x<6

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