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by DaleCallahan | Apr 4, 2016 | Geometry, Geometry Chapter 14, Geometry Tests
Question: how do we work the problem on Chapter 14 test #4. Answer from Harold Jacobs: Since all 16 white regions are identical, we can find the area of one of them and multiply it by 16. This figure represents one of the 16 small squares and one of the white regions....
by DaleCallahan | Feb 26, 2016 | Geometry, Geometry Chapter 10, Known Geometry Errors
Kerry Asked: In Chp. 10, Lesson 4, Set III Question 4 the textbook asks “Why is QD/AC = DB/CD?” Shouldn’t it be DB/CB instead of DB/CD? Dr. Callahan Answered: Again you are correct. This is an error in the new printing of the 3rd edition by My...
by DaleCallahan | Feb 26, 2016 | Geometry, Geometry Chapter 10, Known Geometry Errors
Kerry wrote: For Ch. 10, Lesson 2, Set III number 4 asks for rectangles with a ratio of 3/4. The key says there are 4 rectangles that have dimensions of 1.5×2. ABHG is correct, but the other three rectangles seem to be wrong. The key lists BDJI (which...
