True or false: the sum of any two sides of a triangle are longer than the third side of the same triangle.

If we talk of interior angles, then yes.

e. g. a triangle with all 3 sides with 60*

so 60 + 60 = 180

and the third side (angle) is 60 so:

60 is not equal to 180.

except in the case of right angle triangle.

90 (third angle) = 60 + 30 (angle 1 + 2)