Question

Point O is the center of the given circle. What is the measure of ?

Answer 1

can you deduce angle EFO ?

Answer 2

does EFO have to equal like 180 or something?@UnkleRhaukus

Answer 3

its an isosceles triangle

Answer 4

the answer is 38?right?@UnkleRhaukus

Answer 5

good, so can you now find angle EOF

Answer 6

what does isosceles triangle add up to though?

Answer 7

the angles in any (2D) triangle add to 180°

Answer 8

eof is 90?

Answer 9

EFO + OEF + EOF = 180°
38° + 38° + EOF = 180°

Answer 10

104

Answer 11

yeah angle EOF is 104°

now can you get angle FOD ?

Answer 12

remember that the angles on a straight line also add to 180°

Answer 13

76?

Answer 14

good work

Answer 15

the measure of DF is 76 or 104? 76 right?

Answer 16

answer?

Answer 17

does DF with a line over it , mean the same thing as the angle DOF?

Answer 18

i think so

Answer 19

im not used to the notation with the curvy line above it, but i think it just mean angle DOF. you just found angle DOF = angle FOD so i think thats your answer

Answer 20

its 76

Answer 21

yeah i think so