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Mathematics 15 Online
OpenStudy (anonymous):

Hey guys this is a question from similarity... which i am unsure with... i'll post it in a sec...

OpenStudy (anonymous):

|dw:1342925072289:dw| prove that ABD and ADC are similar...

OpenStudy (anonymous):

We can actually say that the triangles are equal. Anyone else see it?

OpenStudy (anonymous):

\[\angle B + \angle C = 90\]\[x = \angle B\]\[\angle DAC = 90 - (90 - x) \implies \angle DAC = x\]Therefore: |dw:1342925566112:dw| \(\triangle ABD \cong \triangle ACD\) by AA similarity postulate.

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