Points C and D are equidistant from points A and B, so Dominic's square could be ACBD. To draw that square, his next move should be ...
... Use a straightedge to join points C and A, C and B, D and A, and D and B
Need the rest of the question to help...
Here is the answer and explaining how i did it
<h2>Answer:</h2>
m<1=130°[alternate angle are equal again]
m<1+m<2180°[linear pair]
m<2=180°-130°
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