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1. Given 3 non-collinear points, there is one and only one circle containing all three points.
2. If triangles ABC and DEF have right angles at A and D and have AB=DE and BC=EF show the triangles are congruent.
For 1: The three points are on the circle. I'm not sure where to start. We've really only done work with triangles and lines in the class so far.
For 2: I now have angle-side-side which is not a valid form of proof. I've tried proving by contradiction with no success. I'm not sure what step to take now.
ideas?
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