## No-data 3 years ago I can't understand this proof: =/

1. No-data

2. No-data

Sorry Turing, I still don't get it.

3. Hero

Level of difficulty increased when put in espanol

4. No-data

I'm writting the traslation Hero. wait.

5. No-data

Let P a poin outside the line XY; PO a line perpendicular from P to XY, and PZ another line drawn from P to XY. Prove that PZ is not perpendicular to XY.

6. No-data

TuringTest already helped me to prove it(He did it actually) but the thing is that I can't understand the proof that is given in the book.

7. TuringTest

what is "recto" ?

8. TuringTest

when it says "son rectos"

9. No-data

recto = 90 degrees

10. TuringTest

that's what I thought

11. No-data

I don't get the line before the last one.

12. No-data

Ohh I think I get it =)!

13. No-data

The number 34 says. un angulo recto es la mitad de un angulo de lados colineales.

14. No-data

It was proved that the angle P'ZP has not colineal sides. and then proved that angle OZP is half angle P'ZP.

15. No-data

It proved that OZP is half of an angle that is not a 90º angle.

16. No-data

I think I understand now but I'm still incapable of doing that kind of proofs by myself. =/

17. TuringTest

It seems so excessive. I couldn't do the proof myself like this, you saw my way. I'm not so sure I care to do proofs like this frankly :P

18. No-data

What do you mean by excesive?

19. TuringTest

too much more work than is necessary/needed

20. No-data

Do you think I should study from another book instead?

21. TuringTest

depends what you want to learn I guess

22. No-data

Well I want to learn geometry and learn how to make proofs.

23. TuringTest

then I guess this is the kind of stuff you should be learning I'm not that rigorous myself good for you though ;)

24. No-data

Well thank you then =). I hope to have learn by the end of this year. If everything goes right.

25. amistre64

one problem i see is that it is sideways

26. No-data

I'm sorry amistre64. =/

27. No-data

I couldn't fix that quickly

28. amistre64

i think this is a rendition of euclids elements

29. No-data

a rendition?

30. No-data

what is that?

31. No-data

Actually I wanted to study Ecuclid's elements. But I started doing this book before. So I don't want to start again.

32. amistre64

http://aleph0.clarku.edu/~djoyce/java/elements/bookI/propI12.html they might give you some insight into it tho

33. No-data

Wooww thank you amistre64!

34. amistre64