Atriangle has side lengths measuring 20 cm, 5 cm, and n cm. which describes the possible values of n?

Sum of two sides of the triangle should be more than 3d side.
n<20+5,
n<25

Third side should be more than difference of  two other sides.
n> 20-15
n>5

So, n should be
5<n<25.

B) greg: 30 points , tremaine 38 points