Answer:
a = 117 , b = 117 , c = 63 , d = 78
Explanation:
Assuming you require the values of a , b , c , d
a and 117 are vertically opposite angles and are congruent (equal) , so
a = 117
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b and a are alternate angles and are congruent , then
b = a = 117
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b and c are a linear pair and sum to 180, that is
b + c = 180 ( substitute b = 117 )
117 + c = 180 ( subtract 117 from both sides )
c = 63
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d and 78 are corresponding angles and are congruent , so
d = 78