Prove $\angle1\cong\angle4$
By Joseph Russell •
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I tried to complete this two-column proof with reasons per statement. Here's my work:
If someone could tell me where I went wrong, it would be very helpful.
$\endgroup$ 61 Answer
$\begingroup$$\angle 1=90^\circ - \angle 2 = 90^\circ - \angle 3= \angle 4$
$\endgroup$More in general
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