Can Someone Help Me Get This Answer Kind A Really Struggling

Can someone help me get this answer kind a really struggling

 

Answer:

C and D

<RDY and <NDA they are both right angles, all of the angles formed right angles

A. Is not true because complementary anglesis equal to 90° but their not

B. They are not a linear pair because they dont share a common ray and they should be adjacent

C. They are vertical angles since they are opposite and equal to each other

D. They are supplementary because their sum us equal to 180°


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