sierram298
01.07.2019 •
Mathematics
In a trapezoid abcd with legs ab and cd , the diagonals intersect each other at point o.prove: oa·ob=oc·od.
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Ответ:
AOD and COB are similar ==> property of trapezoid
so AO:DO=CO:BO ==> definition of similarity
then AO*BO=CO*DO ==> cross-products
Ответ:
its a normal function
Step-by-step explanation:
Ответ: