/sci/ - Science & Math

Anonymous Fri Apr 6 11:36:04 2018 No.9651134 [View]
File: 2 KB, 111x62, 1493510201227.png [View same] [iqdb] [saucenao] [google]

Ok so having issue wrapping my head around this:

According to specs of similar triangles, only corresponding sides are proportional in equation.

Therefore, since AOB similar to COD then corresponding sides should share the equal angles.

Therefore, CD/AB = CO/OB = AO/OD

But the proper solution for this exercise uses proportion:
BO/OD which is wrong, because these ARENT corresponding side, they share different angle with CD and AB (if you can rotate AOB 180deg you will get a "smaller" version of COD) so their ration shouldnt be equal.

Wtf?

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/sci/ - Science & Math

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