Question

Below, AC is a diameter of circle O. A segment connecting points E and C is congruent to which of the following?
http://secure.starssuite.com/files/geo2010/geom_14S_Fig10.jpg

would it be ab im not too sure

Answer 1

You can use rules of inscribed angles and congruent triangles to arrive at your answer.

Answer 2

yes but im still not too sure about the correct answer

Answer 3

Congruent arcs have congruent chords.

Answer 4

so because AC is diameter of circle this mean that has 180 degree yes ? because 360/2 =180

so than you know again that arc AB has 110 degree so from this result that arc BC need being equal 70 degree

Answer 5

What is m(arc)BC?

Answer 6

What is m(arc)DC?

Answer 7

what mean BC = AE

Answer 8

so this mean that EC = AB how you have supposed

Answer 9

right

Answer 10

so do you understand it now ?

Answer 11

yeah i do thank !