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Mathematics 18 Online
OpenStudy (hang254):

Jerry inscribed a quadrilateral ABCD in a circle, as shown below. If the measure of arc BCD is 250°, what is the measure of angle BCD? 70˚ 75˚ 55° 80°

OpenStudy (hang254):

@saifoo.khan

OpenStudy (saifoo.khan):

I need the photo attachment too! it says "as shown"

OpenStudy (hang254):

sorry!

OpenStudy (hang254):

OpenStudy (saifoo.khan):

Hint: Find the measure of arc BAD

OpenStudy (hang254):

how would i do that?

OpenStudy (saifoo.khan):

Arc BAD = 360 - 250

OpenStudy (saifoo.khan):

You need to find arc BAD because angle BCD cuts across it.

OpenStudy (hang254):

110

OpenStudy (saifoo.khan):

So it would be 110 and then cut it in half to get the angle measure

OpenStudy (hang254):

55

OpenStudy (saifoo.khan):

You got that right!

OpenStudy (hang254):

oh, so thats what arc BCD equals?

OpenStudy (hang254):

Thanks!

OpenStudy (saifoo.khan):

55!

OpenStudy (saifoo.khan):

wait. angle is 55.

OpenStudy (hang254):

alright, i got that. Thanks :)

OpenStudy (saifoo.khan):

Welcome.

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