Question

Solve the problem below.

https://nnds-li.brainhoney.com/Resource/19791663,8AE/Assets/assessmentimages/geometry_part_2_u4l5_5.jpg

112°
34°
22°
68°

Answer 1

@amistre64

Answer 2

what is arc AD?

Answer 3

what do you mean

Answer 4

what is the measure of arc AD

Answer 5

i dont know

Answer 6

oh, i think you do know, your just not aware if what im asking.

the arc in front of a central angle is equal to the angle.

arc(AC) = ang(AOC)

arc(AC) + arc(AD) = 180

Answer 7

the arc from C to D is half a circle right?

Answer 8

68 degrees is arc ac

Answer 9

good, then arc AD = 180 - 68

Answer 10

so 112

Answer 11

good, now heres a useful property

the angle on a rim, is half the subtended arc

by symmetry, arc(BD) = arc(AD)

arc(BC) is subtended by ang(BCO)

arc(AD) is subtended by ang(DA ray?)