marcoduuuh
If D is the circumcenter of ABC, what is the measure of XBC?
(Picture below.)



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marcoduuuh
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NotTim
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are you just suppose to provide an expression?

NotTim
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ello, dear friend?

marcoduuuh
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Nooo. Like, the degrees.

NotTim
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le bugger

NotTim
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you think ebz is 90 deg? I think its 90

marcoduuuh
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You sure? I don't know what I have to do on this question haha. >.<

marcoduuuh
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The answer was 70.

NotTim
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oh, then ebz IS 90. You know that the angles in a triangle add up to 180 right

NotTim
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ello, dear friend?