Question Number 183551 by HeferH last updated on 26/Dec/22
Answered by CrispyXYZ last updated on 27/Dec/22
$${LF}={BJ},\:{LB}={FJ} \\ $$$$\Rightarrow{BLFJ}\:\mathrm{is}\:\mathrm{a}\:\mathrm{parallelogran} \\ $$
Commented by CrispyXYZ last updated on 27/Dec/22
Commented by HeferH last updated on 27/Dec/22
$$\left.{thank}\:{you}\::\right) \\ $$