Question

what is M 12 years ago

Answer 1

picture

Answer 2

Do you understand that angles BFD and CFE are equal?

Answer 3

yes

Answer 4

now angle BFD cuts arc BD and CFE cuts arc CE. the measure of the angles BFD and CFE is the average of the measure of these two arcs...

so what is the average of these two arcs?

Answer 5

i got confused :/

Answer 6

do i subtract

Answer 7

that's ok...let's take a step back.

you see how angle BFE cuts arc BD and angle CFE cuts arc CE?

Answer 8

yes

Answer 9

sorry...angle BFD cuts arc BD and CFE cuts arc CE

Answer 10

ok...so measure of arc BD is 108 and measure of arc CE is 134.

Do you know how to find average?

Answer 11

add them and then divide ?

Answer 12

yep...so what is the averge of those two measures?

Answer 13

but what number do i use to divide 242 ?

Answer 14

well, you added 2 numbers together...so you divide by 2.

always divide by the number of things that were added...

Answer 15

121

Answer 16

right. :) so that is the measure of angle BFD which is the same as angle CFE

Answer 17

but angle BFD and angle DFE together form a straight line...yes?

Answer 18

but 121 is not on my answer choices :/

Answer 19

i know...we're not there yet

Answer 20

we've got one more step...

Answer 21

do you see that angle BFD and angle DFE form a straight line?

Answer 22

yes

Answer 23

how many degrees are there in a straight line?

Answer 24

180

Answer 25

right...so if angle BFD is 121 degrees, how many degrees would DFE be to make the 180 total?

Answer 26

59

Answer 27

is that one of your answers?

Answer 28

yes :) thanks