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Mathematics 14 Online
OpenStudy (anonymous):

https://cdn.ple.platoweb.com/EdAssets/4481aba0fcdc4ec6ae304ca498a9a2cc?ts=635385673157030000 In this figure, m∠BDA=° and m∠BCA=°.

OpenStudy (welshfella):

m>BDA = ½ * m>BOA m>BOA = 360 - 250 degrees

OpenStudy (welshfella):

from this yo can work out the measure of angle BDA

OpenStudy (anonymous):

so 360-250 is angle bda

OpenStudy (anonymous):

and bca?

OpenStudy (welshfella):

NO > BOA = 360-250

OpenStudy (anonymous):

how do i find bca and bda

OpenStudy (anonymous):

thank you

OpenStudy (welshfella):

you can find m> BDA from the information in my first post

OpenStudy (anonymous):

bda=55?

OpenStudy (welshfella):

to find m >BCA consider the quadrilateral BOAC

OpenStudy (welshfella):

yes 55 degrees is correct

OpenStudy (welshfella):

for > bda

OpenStudy (anonymous):

bca=110?

OpenStudy (welshfella):

no the way to find bca is by using the following :- look at boac > boa = 110 , >cb0 = > cao = 90 degrees and the 4 angles in the quadrilateral add up to 360 degrees.

OpenStudy (welshfella):

think about it. I have to go right now.

OpenStudy (anonymous):

80?

OpenStudy (welshfella):

360 - (110 + 90 + 90)

OpenStudy (anonymous):

70

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