Question

figure abcd is a parallelogram
if abcd is also a rhombus, what must be the value of x?

Explanation:

Step1: Recall the property of a rhombus

In a rhombus, the diagonals are perpendicular to each other. So, the angle \((5x + 25)^{\circ}=90^{\circ}\)

Step2: Solve the equation for \(x\)

$$
LATEXBLOCK0
$$

Answer:

\(13\)