Geometry Ch13.6 #32

by | Feb 1, 2019 | Geometry, Geometry Chapter 13

For Chap 13, Lesson 6, #32, the basis for the answers is the figure for #6.  If we look carefully at the grid, applying the Pythagorean Theorem gives XY^2 = 2^2 + 2^2 = 8, so XY = sqrt8 = 2sqrt2.  YZ^2 = 1^2 + 1^2 = 2, so YZ =sqrt2.  Therefore XY = 2YZ.Harold Jacobs...
The Different Geometry Textbooks and Videos

The Different Geometry Textbooks and Videos

by | Sep 5, 2018 | Blog, Geometry

The 3rd edition of the Harold Jacobs Geometry textbook has gone through three different printings with 3 different covers and ISBNs. If you are picking a text and looking at used options, it can be confusing. So let me try to help. First, all 3 versions are basically...
Geometry Ch8 Review #32

Geometry Ch8 Review #32

by | Sep 5, 2018 | Geometry, Geometry Chapter 8

Question from Jennifer: Chap 8 review #32 We aren’t sure how the answer would be 24mm. Answer: This is not explained well in the textbook. First – the translation is the movement of the bat from position B to position C (see chap 8, Lesson 2) A translation is...

Geometry Ch5.1 #29

by | Jul 19, 2018 | Geometry, Geometry Chapter 5

Question from Courtney I’m having trouble with Chapter 5, Lesson 1, Problem 29. I have worked the problem, I know what the answer should be, but given the figure, I don’t understand how that could be false. Without the figure, I understand it. Answer: You...
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