Welcome!...

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Welcome! Tear Out: Pages 349368 and staple together Page 369 (homework) U5H5: Pg. 369 #12 Updates: U5Q2 (Activity 2425, 32) 1 st /4 th /6 th will be Friday, March 4 th

Transcript of Welcome!...

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Welcome!  Tear  Out:  Pages  349-­‐368  and  staple  together    Page  369  (homework)

U5H5:  Pg.  369  #1-­‐2    

Updates:  U5Q2  (Activity  24-­‐25,  32) 1st/4th/6th    will  be  Friday,  March  4th  

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Reminder   Reminder:  U5Q1  Must  be  taken  by  Friday  (2/26)! 1st  –  Nikki,  Eduardo,  Matt,  Emmy,  Thania 4th  –  Brandon,  Siffat,  Priyanka,  Bradley;  **No  name  paper** (Neikon) 6th  –  Trevor,  Gavin,  Trent,  Aidan,  Amanda,  Sanam,  Sam  P.,  Camellia,  Andrew

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Agenda  

1.  Warm-­‐Up!

2.  Correct  U5H4

3.  25.1

4.  CFU

5.  Begin  25.2

6.  Exit  Ticket

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Warm-­‐Up!  (1)  Name  all  of  the  chords. (2)  Name  all  of  the  tangents. (3)  Name  all  of  the  diameters. (4)  What  is  the  plural  form  of  radius?    

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Warm-­‐Up!  (5)  What  is  the  value  of  EG?  

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U5H4  I  will  call  on  you  randomly;  Be  ready!

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Learning  Objectives  By  the  end  of  this  period  you  will  be  able  to:  Ø  Measure  an  arc  of  a  circle.  Ø  Use  relationships  among  arcs  and  central  angles  to  solve  problems.  

   

 

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Activity  25.1  –  Arcs  and  Central  Angles  Page  349   Read  the  airst  paragraph  to  yourself  and  draw  a  picture  of  the  scenario  in  the  My  Notes  column.  (3  minutes)  

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Activity  25.1  –  Arcs  and  Central  Angles  Page  349   Read  the  second  paragraph  to  yourself  try  to  make  sense  of  the  diagram  I  am  passing  out  to  each  table.  (3  minutes)  

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Activity  25.1  –  Arcs  and  Central  Angles  Page  349   Read  the  third  paragraph  to  yourself  try  to  make  sense  of  the  diagram  I  am  passing  out  to  each  table.  (3  minutes)  

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Activity  25.1  –  Arcs  and  Central  Angles  Page  349-­‐350 In  your  groups  answer  #1-­‐3.  Keep  in  mind,  for  #3  only  use  your  marker  not  an  actual  pen  since  you  cannot  write  on  these  papers.  (4  minutes)  

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Activity  25.1  –  Arcs  and  Central  Angles  

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Activity  25.1  –  Arcs  and  Central  Angles  

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Activity  25.1  –  Arcs  and  Central  Angles  Page  350

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Activity  25.1  –  Arcs  and  Central  Angles  Page  350 We  will  read  the  paragraph  as  a  class.  

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Group  Discussion  

ü  Why  is  it  called  a  minor  arc  versus  a  major  arc?  (1  min) ü  Why  is  it  called  a  central  angle?  (1  min)    

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Activity  25.1  –  Arcs  and  Central  Angles  o  Title  the  next  NEW  page  in  your  notebook: U5A24 Arcs  and  Chords (49)

o  Draw  a  large  circle.  Once  again  we  will  be  ailling  it  with  arc  and  angle  deainitions.  

 

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Activity  25.1  –  Arcs  and  Central  Angles  Central  Angle  o  An  angle  whose  vertex  is  at  the  center  of  a  circle  and  whose  sides  contain  radii  of  the  circle.    

     

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Activity  25.1  –  Arcs  and  Central  Angles  Arc  o  An  unbroken  part  of  a  circle  is  created  by  two  points,  called  the  endpoints.  The  arc  contains  all  of  the  points  between  the  two  endpoints.  

o  We  use  a  rainbow  over  letters  to  identify  an  arc.          AB  o  May  also  be  called  intercepted  arc.    

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Activity  25.1  –  Arcs  and  Central  Angles  Minor  Arc  o  An  arc  whose  points  are  on  or  in  the  interior  of  a  central  angle.  

o  The  measure  of  a  minor  arc  is:      mAC  =  m∠ABC  o  Smaller  than  180  degrees.  o  Only  need  two  letters  to  name  the  arc.    

   

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Activity  25.1  –  Arcs  and  Central  Angles  Major  Arc  o  An  arc  whose  points  are  on  or  in  the  exterior  of  a  central  angle.  

o  The  measure  of  a  major  arc  is:      mADC  =  360°  -­‐  m∠ABC  o  Larger  than  180  degrees.  o  Must  use  three  letters  to  name  (this  is  what  distinguishes  a  major  and  minor  arc  from  one  another).          

 

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Activity  25.1  –  Arcs  and  Central  Angles  Semicircle  o  The  endpoints  of  an  arc  lie  on  the  diameter.  o  The  measure  of  a  semicircle  is  180°.        mEFG=  180°    o  Must  use  three  letters  to  name.    

     

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Activity  25.1  –  Arcs  and  Central  Angles  Pg.  351  BrieQly  looking  at  a-­‐f  in  #5,  label  which  arcs  will  be  minor  arcs  and  which  will  be  major  arcs.  (1  minute)        

     

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Activity  25.1  –  Arcs  and  Central  Angles  Attempt  a-­‐f  and  #6.  (3  minutes)      

     

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Activity  25.1  –  Arcs  and  Central  Angles  As  a  group,  complete  #7  (a-­‐g).  This  is  more  critical  thinking  and  preparing  you  for  the  writing  portions  on  your  District  Tests.  Use  as  much  detail  as  you  can!    (8  minutes)      

     

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Activity  25.1  –  Arcs  and  Central  Angles  Each  team  will  receive  one  big  whiteboard.  Please  answer  the  indicated  problems  on  your  big  whiteboard  in  as  much  detail  as  possible.    #7(a-­‐b):  Table  1,  4,  7,  10    #7  (c-­‐d):  Table  2,  5,  8,  11    #7  (e-­‐g):  Table  3,  6,  9,  12    

5  minutes      

     

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CFU  –  Whiteboards                  Ø  What  is  another  name  for  the  sides  of  a  central  angle?  

Ø  Why  is  a  major  arc  of  a  circle  designated  by  three  points  on  the  circle?    

 

     

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Learning  Objectives  By  the  end  of  this  period  you  will  be  able  to:  Ø  Describe  relationships  among  inscribed  angles,  central  angles,  and  arcs.  

   

 

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Activity  25.2  –  Inscribed  Angles  Pg.  353  Read  the  introduction  paragraph  and  answer  #1-­‐5.  If  you  get  stuck  please  collaborate  with  your  teammates.  (5  mins)      

     

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Activity  25.2  –  Inscribed  Angles  Inscribed  Angle  o  An  angle  whose  vertex  is  on  a  circle  and  whose  sides  contain  chords  of  the  circle.  

       

     

   

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Exit  Ticket  Please  put  everything  away  except  for  a  pencil,  eraser,  and  calculator. You  will  have  5  minutes  to  complete  the  exit  ticket;  cover  your  own  papers.  When  you  are  done  please  come  place  your  exit  ticket  under  the  appropriate  category  on  my  desk: Green  –  Today  went  well!  I  think  I  remember  everything! Yellow  –  Today  went  okay;  I  remembered  some… Red  –  Today  was  rough…  I  don’t  remember  anything… Please  check  your  desks;  did  you  leave  trash  behind?    

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Timings  Intro:  3mins 7:58 10:52 1:09 Warm-­‐Up!:  5mins 8:03 10:56 1:14 Correct  U5H4:  8mins   8:11 11:04 1:22 25.1:  60mins 9:11 12:04 2:22 CFU:  8mins 9:19 12:12 2:30 Begin25.2:  12mins 9:31 12:24 2:42 Exit  Ticket:  7mins 9:38 12:31 2:49

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Table  1 Table  2 Table  3                Hana              Braiden                  Nicole                      Yash              Madison                Kevin                  Grace              Sophie                  Jacob      

Table  4 Table  5 Table  6 Table  7                  Alex          Nikki            Leslie          Elina          Casey          Angie            Natalee          Matt          Justin          Jake Evan          Alyssa  

Table  8      Table  9 Table  10 Table  11 Table  12

        Cameron        Amin                        Sherman            Ashik Emmy        Bryan        Eduardo        Kia              Bella        Savannah          Dash        Thania

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Table  1 Table  2 Table  3                Parker                Jimmy                Bradley                    Priyanka              Jenny                Maddie  E.                    Georgia                            Alisa                Sasha      

Table  4 Table  5 Table  6 Table  7                  Steven          Brandon          Cynthia            Ricardo          Emily          Kevin          Brook Mia          Siffat          Alexi          Nate Tyler

Table  8      Table  9 Table  10 Table  11 Table  12 Jordan                Maddie  P. Yen        Stephanie Michael        Neikon    

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Table  1 Table  2 Table  3                Camellia              Trent                Trevor                  Ceana                Amanda              Ryan                  Manny                Sam  H.                Grace  

 Table  4 Table  5 Table  6 Table  7

                 Philip          Arianna                          Reagan        Gavin          Alex          Andrew Guk      Anusha        Tanveen          Micheala Anthony      Sahya  

Table  8      Table  9 Table  10 Table  11 Table  12 Sanam        Aidan          Lauren        Jonathan   Sam  P.        Damien        Denise        Jennie Fabiana        Sam  C.              Athena