Question

If chord CD is drawn, the measure of ∠ACD would be?
Given: AC & BD are diameters
https://banff.owschools.com/media/g_geo_2013/7/group124.gif

Answer 1

that would create an isosceles triangle. the measure of angle 4 is 90 degrees which means that there is another 90 degrees left. 90/2 = 45. 45 degrees is your answer :)

Answer 2

wait thats not one of my choices?

Answer 3

what are your answer choices?

Answer 4

39

78

102

Answer 5

see semicircle angle=180 right?

Answer 6

so angle acd=180-78=102

Answer 7

understood? @vbryand

Answer 8

if u have doubt i will clear you