Answer:
option (a) is correct.
the value of line segment DC is 19 .
Explanation:
Given a trapezoid ABCD with AB║DC and AB = 13 , GH = 16
We have to find the length of DC.
mid segment is a line joining mid points of two non parallel sides of a trapezoid.
Trapezoid mid segment theorem states that the mid segment of a trapezoid is equal to half of sum of its two parallel sides.
Since, G is mid point of side AD as AG = GD (given)
also, H is mid point of side BC as BH = HC (given)
Thus, GH is the mid segment of the trapezoid ABCD.
AB║DC , GH ║DC AB║GH
Thus, using trapezoid mid segment theorem, we have
![GH=(1)/(2)(AB+DC)](https://img.qammunity.org/2020/formulas/mathematics/high-school/l9qqj39i1oux0zd7e5s6um76kumylc98yq.png)
Substitute known values,
![16=(1)/(2)(13+DC)](https://img.qammunity.org/2020/formulas/mathematics/high-school/zsy3dc98u9064n0pqs0vgz9p29mn7z6f6m.png)
![\Rightarrow 32=(13+DC)](https://img.qammunity.org/2020/formulas/mathematics/high-school/wh33uu5pscucvki3lt4u62oo6ftjqea73n.png)
![\Rightarrow DC=19](https://img.qammunity.org/2020/formulas/mathematics/high-school/unsz7f460w10f4230tfa30sc59b2h6szzo.png)
Thus, the value of line segment DC is 19 .
Hence, option (a) is correct.