Explain whether the following given sets are closed under addition: a. B ={0}
b. T = {0, 3, 6, 9, 12, . . . }
c .N = {1, 2, 3, 4, 5, . . .}
d. V = {3, 5, 7}

Step-by-step explanation:

a) Yes.

b) Yes

c) Yes

d) No

a

explanation:

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.