A rhombus is a type of parallelogram, and what distinguishes its shape is that all four of its sides are congruent.
One of the properties of a rhombus is the fact that diagonals are perpendicular. In another words, the given three measures all measure 90º.
Using this information for m∠1, we can determinate the value of x.
![m\angle1=90^o\implies18x=90\implies x=(90)/(18)=5](https://img.qammunity.org/2023/formulas/mathematics/college/bkj8pr0hjnr9iuc8xyjdhxn0pyyfgu3k3f.png)
Now that we have the value for x and the measure of ∠2 we can determinate y.
![\begin{gathered} m\angle2=x+y \\ 90=(5)+y \\ y=85 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/b635oswhtcx1g2gxtqtxxtrb899lgs1ob3.png)
We have the measure of ∠3, therefore, we can determinate z.
![30z=90\implies z=(90)/(30)=3](https://img.qammunity.org/2023/formulas/mathematics/college/fjjtiiw3nio2pmoym3duohvpfxj8zwhxqx.png)
The values of each variable are
![x=5,\:y=85,\:z=3](https://img.qammunity.org/2023/formulas/mathematics/college/6opldk9ihss698hiwgsi0uz150x5njnboy.png)