Question

For what value of x is the given parallelogram a rhombus?

Answer 1

Answer:

$\sf x = 6$

solving steps:

$\sf in \ a \ rhombus \ the \ opposite \ angles \ are \ equal$

$\hookrightarrow \sf 7x + 4 = 9x - 8$

$\hookrightarrow \sf 7x -9x = - 8-4$

$\hookrightarrow \sf -2x = - 12$

$\hookrightarrow \sf x = 6$