Seth is using the figure shown below to prove pythagorean theorem using triangle similarity.
in the given triangle abc, angle a is 90o and segment ad is perpendicular to segment bc.
which of these could be a step to prove that bc2= ab2 + ac2?
triangle adc is similar to triangle bac by the sas similarity theorem.
triangle adb is similar to triangle cda by the sas similarity theorem.
triangle adc is similar to triangle bac by the aa similarity theorem.
triangle adb is similar to triangle cda by the aa similarity theorem.

the first two use congruence reasons. and the triangles are certainly no congruent. the fourth one doesn't contain the side bc.

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answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88