I need help with this one, its too hard for me

Answer:
<C + <D = < DEK
<D = 40
Step-by-step explanation:
The exterior angle is equal to the sum of the opposite interior angles
<C + <D = < DEK
60 + <D = 100
<D = 100 -60
<D = 40
Answer:
[tex]60+m\angle D=100[/tex]
[tex]m\angle D=100-60[/tex]
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Hope it helps...