please show work

Question

please show work

anonymous · Answer

attachment

anonymous · Answer

please reply!!!!

amistre64 · Answer

arcAD = 80; angAOB = 100

arcAB = 100; angC = 50

arcABD = 100+80 = 180 , and its a chord thru the center soo

andBAO = 40 since 40+100 +x = 180

anonymous · Answer

can you show the work?

amistre64 · Answer

not really since this isnt a graphic interface

anonymous · Answer

is there any work?

amistre64 · Answer

central angles sweep out equal measures of arcs

inscribed angles sweep out an arc that is double.

amistre64 · Answer

follow that measures from 1 to the end ...

anonymous · Answer

ty

anonymous · Answer

amistre64 can you explain more?

anonymous · Answer

can you show the work more instead of just the answers

amistre64 · Answer

not really, thats as basic as I can state it

amistre64 · Answer

40 creates 80
80 creates 80 in the center
80 + 100 = 180
100 center creates 100 arcwhich creates a 50 angle ....

anonymous · Answer

what do you mean my creates

anonymous · Answer

like where do you get the 100 from

amistre64 · Answer

i mean that when I draw in here to show any work it doesnt really translate well into text :)

amistre64 · Answer

the hundred comes from the other part of the 180 that the 80 is attached to

amistre64 · Answer

inscribed angles produce arcs of 2x their measure

center angles produce arcs of equal measure....

amistre64 · Answer

and the measures are inverses of each other so that if you know one you can get to the other

anonymous · Answer

ok how about for #12?
how do you get that

amistre64 · Answer

since you have a chord going straight thru the center of a cirlce; that divides it in half.  360/2 = 180

anonymous · Answer

is it supposed to be 180 or 280?

amistre64 · Answer

depends on your definition of half of a circle i spose.  id go with 180 meself

anonymous · Answer

ok

anonymous · Answer

amistre64, i have a couple more similar questions....ill write them as new questions so i can medal you

anonymous · Answer

9)
AD=twice time angle 1= 80
I was wrong number 9

amistre64 · Answer

since <1 = 40; arcAD = 2(40) = 80

since arcAD = 80, arcAB = 100

since arcAB=100, <AOB = 100

since arcAB = 100, <C = 100/2 = 50

since <1=40, <AOB = 100; and triangles add up anlges to 180, 
                                           that leaves 40 left for <BAO

anonymous · Answer

10)
m<AOB = 180 - 80
m<AOB = 100

amistre64 · Answer

write em up :)

anonymous · Answer

11) 
arc AB =< AOB =100

anonymous · Answer

12)
180+100=280

anonymous · Answer

13)
<acb= 1/2 ARC AB
         = 100/2
          = 50

anonymous · Answer

14)
m<BOA +  m<1+  m<BAO = 180
     100  +   40    + m<BAO = 180
 m<BAO = 180 -( 100+40)
                = 180- 140
  m<BAO = 40