Question

If m DFC = 40° and m arc CD= 55°, then m arc bg =

Answer 1

heya this one seems very similar to the last one is it the same formula or a different one?

Answer 2

https://media.glynlyon.com/g_geo_2012/7/group177.gif

Answer 3

oh there's the link btw

Answer 4

this is lil tricky

Answer 5

lets work it,


if, m DFC = 40

m BFC = ?

Answer 6

not sure

Answer 7

open the pic i attached

Answer 8

that green angle is m DFC = 40, right ?

Answer 9

yes

Answer 10

m BFC = 180-40

cuz, BD is a straight line !

Answer 11

mmmk so 140

Answer 12

before we move further solving the problem, pls make sure you understand how we got m BFC = 180-40 = 140