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Scilla [17]
3 years ago
14

[GEOMTRY]~find the measure of each arc

Mathematics
1 answer:
Rashid [163]3 years ago
8 0

Step-by-step explanation:

m(arc AD) = m \angle ARD \\  = 105°\\\\m(arc BD) = m \angle BRD  \\ = 50°+ 35° \\ = 85°\\\\m(arc ADB) = 105°+50°+ 35° \\ = 190°\\\\m(arc ABC) = 360°-(105°+50°) \\ = 360°-155° \\ = 205°\\\\ \\

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Hello

I see you are very confused by this problem. However, there is an easy way to solve this one.

It has been proved that the sum of all angles in a rectangle is always 180°. Here is a way to prove it:

x y

_______A_________

/\

/ \

/ \

/ \

___/_______ \__

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we have two parellel lines xy and BC. It is true that:

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=> ........

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