<PRE><B>Question 992647</B>

(Given)   &amp;#8736;UKV and &amp;#8736;VKW are complements.


(Definition of complementary angles)   m &amp;#8736; UKV + m &amp;#8736; VKW = 90°        


(Congruent vertical angles) &amp;#8736;UKV &amp;#8773; &amp;#8736;XKY, &amp;#8736;VKW &amp;#8773; &amp;#8736;YKZ


(Definition of congruent angles) m &amp;#8736; UKV = m &amp;#8736; XKY, m &amp;#8736; VKW = m &amp;#8736; YKZ    


(Substitution) m &amp;#8736; YKZ + m &amp;#8736; XKY = 90°


(Definition of complementary angles) &amp;#8736;YKZ and &amp;#8736;XKY are complements.


Best,
Farohw


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