5. Give a good statement of the converse of the Pythagorean theorem. In a couple of sentences describe the two features of Euclid's proof of the converse that Dunham gives special mention to.

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Q: 4. In each case, sketch the closure of the set: 1 (c) Re (d) Re(z?) > 0.

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Q: 4.4 Find a set of 3 points in S' so that dcos does not satisfy the triangle inequality.

A: Please check step 2 for the solution.!

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A:

Q: 15. Complete the proof of Theorem 1. (ASsume B-A-C, then obtain a contradiction.)

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