Errata (second printing)

• Page 13, Exercise 1.2. Change "Moscow papyrus" to "Rhind papyrus."
  [Reported by David Tannor.]
• Page 29, line 2 of Exercise 2.1. Change "is" to "it". (Should be: "... it should be possible ....")
  [Reported by Fred Gass.]
• Page 44, line 13. Delete "the". (Should be: "... say that a set ....")
  [Reported by Fred Gass.]
• Page 47, lines 12 and 15. Change "Theorem 4.2.3" to "Axiom 4.2.3".
  [Reported by Fred Gass.]
• Page 51, line 3-. Delete "and" at the end of the line.
  [Reported by Fred Gass.]
• Page 68, line 3. Change "Theorem 5.7.7" to "Corollary 5.7.8."
  [Reported by Michael Puls.]
• Page 74, line 4. Insert "the" between "in" and "interior".
  Page 74, line 16. Change "Theorem 5.7.7" to "Corollary 5.7.7."
  [Reported by Fred Gass.]
• Page 91, Exercise 5.11(b). The Incidence Axiom should be I-3.
  [Reported by Fred Gass.]
• Page 109, line 12. Delete "the." (Should be: "... notice that there is ....")
  [Reported by Chara Svaan.]
• Page 109, line 7-. Delete "Exercise 6.6.3" to "Exercise 6.3".
  [Reported by Fred Gass.]
• Page 127, line 17. Change AEGF to AEGH.
  [Reported by Josh Holtrop.]
• Page 130, statement of Aristotle's Theorem. Change "If ∠BAC is an acute angle..." to "If A, B, and C are three noncollinear points such that ∠BAC is an acute angle...".
  [Reported by Neil Swinkels.]
• Page 131, line 2-. Change "previous paragraph" to "first paragraph of this proof".
  [Reported by Fred Gass.]
• Page 167, 5 lines up from bottom of page. Change Lemma 6.7.8 to Theorem 6.7.8.
  [Reported by Chara Svaan.]
• Page 168, line 3-. The reference should be to Definition 6.4.5 rather than to Theorem 6.4.4.
  [Reported by Fred Gass.]
• Page 180, line 8-. Insert "to" between "parallel" and "the".
  [Reported by Fred Gass.]
• Page 230, line 8. Change "at most" to "less than".
  [Reported by Fred Gass.]
• Page 246, caption for Figure 10.33. Interchange the words "inside" and "outside".
  [Reported by Laura Feys.]
• Page 291, line 9-. Change "refections" to "reflections".
  [Reported by Fred Gass.]
• Page 308, 4 lines up from bottom of page. Change Δ to ∠. (Should be: ∠ ABC ≅ ∠ ACB.)
  [Reported by Chara Svaan.]
• Page 312, Figure 12.19. The Q and Q' in left hand diagram should be interchanged.
  [Reported by Irina Kogan.]
• Page 318, line 14. The symbol ∠ is missing. (Should be: ∠ BP'R' ≅ ∠ RPP'.)

• Page 319, line 14. Change (AB, PQ) to [AB, PQ].
• Page 324. Line 4: change exscribed to escribed.
  Exercise 12.52: Prove Theorem 12.7.16.
  Exercise 12.54(d): Add the word "Let" at the beginning of the sentence.
  Last line of footnote: Peaucellier.

[Back to FOUNDATIONS OF GEOMETRY.]