im.g.1.5.3 Bisect This

mark vasicek, Jul 29, 2020

Attribution: illustrative Mathematics. geometry. unit 1. section 5. activity 3. "Bisect This" https://im.kendallhunt.com/HS/teachers/2/1/5/index.html Licensed under the Creative Commons Attribution 4.0 license https://creativecommons.org/licenses/by/4.0/


  • 1. Bisect This (Part 1)
  • 2. 1.5.3 Bisect This (Part 2)
  • 3. 1.5.3 Bisect This (Part 3)

1.

Bisect This (Part 1)

1.5.3 Part 1
1. Estimate the location of a point, D, so that angle DBA is approximately congruent to angle CBD.[br][br]2. Measure angles DBA and CBD with the angle measurement tool.[br][br]3. Check your results by doing a DRAG TEST. (This is where you try to drag each of the points. If the construction stays true, it works; if the construction doesn't stay true, it fails and is not a good construction.) [br]
When you create ray BD in this manner, you see that ray BD is NOT a true angle bisector.[br]Explain in sentences why this method doesn't work.[br][br]Sentence Frame: "This method doesn't work because ___."
– mark vasicek

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