are these statement valide or not valide? The GCD of 5 and 9 is 9. The GCD of i

ID: 3723555 • Letter: A

Question

are these statement valide or not valide?

The GCD of 5 and 9 is 9.

The GCD of i and j is less than or equal to j.

The GCD of i and j is positive.

The area of triangle T is greater than its perimeter.

If L1 is parallel to L2, and L2 is perpendicular to L3, then L1 is perpendicular to L3

If L1 and L2 are parallel, then they have the same slope.

A equilateral triangle cannot be congruent to a non-equilateral triangle.

If L1 and L2 have the same slope, then they are parallel.

The sum of any two positive real numbers is positive.

The product of a negative number and a positive number is negative.

The product of any two nonnegative numbers is positive.

Equality of real numbers is transitive.

The sum of any two real numbers is greater than either one of them.

Perpendicular lines have negative reciprocal slopes.

Lines with the same slope are parallel.

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