Ms. Chan's Geometry Honors Chat Room

Thursday, April 7, 2011

7.4 Arcs and Angles PDF

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Pi Investigation Take 3



  • I did this for you in class today

  • if your C/D caluclation was not close to 3.14, you have to redo it and e-mail me again. Be sure you have the construction tomorrow to turn in for credit

Lengths of Chords and Secants Problems (find the value of the variable)



  1. chord 1 has lengths of 9 and 8; chord 2 has lengths of a and 6

  2. chord 1 has lengths of 12 and 21; chord 2 has lengths of b and 14.

  3. secant 1 has lengths of 40 and 60 where the 40 represents the external part; secant 2 has lengths of c and 30 where c represents the external part

  4. secant 1 has lengths of 15 and 7 where 7 represents the external part; secant 2 has lengths of d and d+8 where d+8 represents the external part

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