BTUAD :e,
Cho A ABC vuoy
tai A, AB CAC
gido AD - Pidng Vrioy goo voś DC tad D cat AC
AABC b A DEC
DE = DB.
CAMR: a)
b,
2, Cho hirl thang ABCO (A-Ô=9°), AD=15um,
thang Abco CA=Ô=g°), AD=15em,
CD=g cm
o d m dà nst tieom triem AD
biet BM= G n, MC=15 cm .
carR;
A ABM s A DMC
b,
God N la tr ...
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