http://prntscr.com/ik75vy
@Vocaloid
|dw:1519693379572:dw|
see if you can compare this general rule to your problem and determine the value of x
@angle what's the proper terminology for those red segments of the circle I can't remember
so what does x equal?
try to compare your problem with my diagram side by side notice how x is equal to one half the sum of the two intersected arcs see if you can apply this logic to your problem
x= 1/2 ?
take a look at your problem notice how the two arcs intersected by the angles are AD and BC? x = (1/2)(AD + BC) = ?
im not sure to be fully honest
take a look at your diagram see how AD is 140 degrees? see how BC is 90 degrees? x = (1/2)(AD + BC) = ?
230?
don't forget the 1/2
115?
good, that's it, 115 degrees
I'm not 100% sure on this but I believe those two angles are equal so (x+2) = (3x - 40) then just solve for x
actually yeah since they transcribe the same arc they're congruent
x=21?
good, that's it
thanks!!!
Join our real-time social learning platform and learn together with your friends!