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Mathematics 16 Online
OpenStudy (mathmath333):

Geometry question

OpenStudy (mathmath333):

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OpenStudy (mathmath333):

Given that ,point \(A\) lies between \(B\) and \(D\) , \(AC=AD\) .Prove that \(\angle BCD>\angle BDC\)

OpenStudy (rational):

should be easy

OpenStudy (rational):

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OpenStudy (mathmath333):

yes its from \(9th\) grade but i still can;t figure it

OpenStudy (rational):

base angles of isosceles triangle are equal

OpenStudy (mathmath333):

hahahah

OpenStudy (mathmath333):

i am silly

OpenStudy (mathmath333):

i forget that \(\angle ADC=\angle BDC\)

OpenStudy (mathmath333):

its embarasing

OpenStudy (rational):

\[\begin{align}\angle BCD &= \angle BCA + \angle ACD\\~\\ &=\angle BCA + \angle ADC\\~\\ &=\angle BCA + \angle BDC\\~\\ &\gt \angle BDC \end{align}\]

OpenStudy (mathmath333):

that looks neat way

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