使う条件は
「2組の辺の比とその間の角がそれぞれ等しい」
△ABC∽△ADEより
AB:AD=AC:AE
∠BAD=∠BAC-∠CAD
∠CAE=∠DAE-∠CAD
△ABC∽△ADEより∠BAC=∠DAEだから
∠BAD=∠CAE
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使う条件は
「2組の辺の比とその間の角がそれぞれ等しい」
△ABC∽△ADEより
AB:AD=AC:AE
∠BAD=∠BAC-∠CAD
∠CAE=∠DAE-∠CAD
△ABC∽△ADEより∠BAC=∠DAEだから
∠BAD=∠CAE
Users viewing this question
are also looking at these questions 😉
