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Mathematics 7 Online
OpenStudy (anonymous):

In the figure, A,B,C,D are points on a circle and AC is a diameter. Find x and y.

OpenStudy (anonymous):

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OpenStudy (jack1):

so from the picture, angle c is a right angle...? or is angle c just equal to x + 50?

OpenStudy (anonymous):

why angle c is a right angle?

OpenStudy (anonymous):

angle d is right angle, right?

OpenStudy (jack1):

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OpenStudy (anonymous):

it's not a right angle

OpenStudy (anonymous):

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