You can use the fact that there are four symmetrical( can be reflected) figures if we draw diagonals in a rhombus, resulting in the middle angles between each diagonals to be of 90 degrees.
The measure of given angle is
[tex]\angle YKZ = 90^\circ[/tex]
What is the angle between diagonals of a rhombus?
The diagonals of a rhombus are perpendicular to each other.
How to get the measure of angle YKZ?
By the aforesaid property, we have:
[tex]\angle YKZ = \angle YKR = \angle RKP = \angle PKZ = 90^\circ[/tex]
Thus,
The measure of given angle is
[tex]\angle YKZ = 90^\circ[/tex]
Learn more about rhombus here:
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