Answer:
Explanation:
Opposite angles = congruent
so
97 = 2c - 3
100 = 2c
c = 100 : 2
c = 50°
--------------------------------
check
97 = 2 * 50 - 3
97 = 97
the answer is good
c = 50
We can set up an equation using the vertical angles theorem.
97 = 2c-3
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