Question

18. ABCD is a parallelogram. Determine the length of AD.OA. 11 unitsOB. 10 unitsOC.5 unitsOD. 2.5 units

Answer 1

If ABCD is a parallelogram, then it means line BC = AD.

Similarly, line BA = CD

Therefore;

`\begin{gathered} BC=AD \\ 2x=x+5 \\ \text{Subtract x from both sides} \\ 2x-x=x-x+5 \\ x=5 \\ \text{If x=5, and line AD=x+5, then} \\ AD=x+5 \\ AD=5+5 \\ AD=10 \end{gathered}`

The length of AD is 10 units

The answer is option B