Question

Help please ...........

Answer 1

D. 120°

Explanation:

Interior angles of a rhombus always add up to 360 degrees. Thus we can set up an equation:

g+g+2g+2g=360

Now let's combine all the like terms (g's).

6g=360

Now we divide both sides by six to isolate g.

g=60

We can now substitute g into angle B, to find its value.

2g

2(60)

120

Thus, the measure of angle B is 120, or option D.