17. Given kite RSTU, what is mRUS?

So
Diagonals of Rhombus intercect at 90°.
So
Using angle sum property
[tex]\\ \tt\longmapsto 90+27+<RUS=180[/tex]
[tex]\\ \tt\longmapsto <RUS=180-117=63°[/tex]
Answer:
Step-by-step explanation:
The diagonals of the kite are perpendicular: RT ⊥ SU
RT is angle bisector of ∠SRU
∠RSU and ∠RUS are equal angles and are complementary with ∠SRT: