Answer:
if angle dfb and angle cea measure something other than 90degrees, then line we is not equal to line bf. in this case, line and and line cd intersect at a single point.
If DFB and CEA measure something other than 90°, then AE /= BF. In this case, AB and CD intersect at a single point.
Step-by-step explanation:
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I hope this helps:)
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