Use a graph sheet for this question.
Take $1\mathrm{cm}=1$ unit along both $\mathrm{boldsymbol}\mathit{x}$ and $\mathrm{boldsymbol}\mathit{y}$ axis.
(i) Plot the following points:

(ii) Reflect the points B, C and D on the $\mathit{y}$ axis and name them as B', C' and D' respectively.
(iii) Write down the coordinates of ${\mathrm{B}}^{\prime },{\mathrm{C}}^{\prime }$ and ${\mathrm{D}}^{\prime }$.
(iv) Join the points A, B, C, D, D', C', B', A in order and give a name to the closed figure $\mathrm{A}\mathrm{B}\mathrm{C}\mathrm{D}{\mathrm{D}}^{\prime }{\mathrm{C}}^{\prime }\mathrm{B}$ '.