Mathematics
Junior High
教えて下さい🙇♀️🙇♀️
右の四角形ABCD で, AB=DC,
AC=DBのとき, AEDE である
ことを証明しなさい。 (20点引)
(△AEDは二等辺三角形であることを,
つまり, ∠ADB=∠DAC を導く。)
B
A
E
D
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