ban nao tra loi gium minh voi:neu uu diem ,nhuoc dien cua bien phap hoa hoc ?

nhung chu y khi su dung thuoc hoa hoc ch cay trong?

nhanh nha minh can gap!!!

 Trong 1 tam giac ,chung minh 3 khang dinh sau

a) Goc doi dien voi canh lon hon la goc lon hon

b) Canh doi dien voi goc lon hon la canh lon hon

c) Neu 1 duong thang di qua trung diem cua 1 canh ,song song voi canh thu 2 thi di qua trung diem cua canh con lai

GIUP MINH NHA CAC BAN OI

Tai sao la phoi trai co 2 thuy,nhung la phoi phai co 3 thuy.

giup mik nha cac ban

vi tinh mik khong viet dau duoc

mong cac ban thong cam va tra loi giup mik

1).cho tam giac ABC,hai diem D,E lan luot la trung diem cua BC va AB.G la giao diem cua AD va CE

a,So sanh dien tich cua cac tam giac GAE,DCG

b,Tinh dien tich tam giac ABC,biet dien tich tam giac BGE bang13,5cm2

c,BG cat AC tai M.chung minh MA =MC

dich ra va giup mink voi nha moi nguoi , mink can gap vao toi nay ,mai mink nop roi.

4 mot manh dat co dien tich 450m2,trong do dien tich san vuon va duong di la 306m2,con lai la dien tich xay nha .hoi dien tichdat xay nha chiem so phan tram dien tich manh dat la

cac ban giup minh voi minh can gap lam ban nao lam dung va chi tiet minh se cho diem

Cac ban oi giup mik voi de thi ki 1 cua mik mong cac ban giup

Mot hinh lap phuong co tong dien tich xung quanh va dien tich toan la 250 cm2. Tinh dien tich toan phan cua hinh lap phuong do.                Cac ban oi giup minh nhe, mai minh phai nop cho co giao roi

very much ngia la gi cac ban oi giup mik voi mik dang can gap olinemath dung chu diem em nha

xac dinh vi tri cua nguoi nguyen thuy sinh song tren trai dat

nho cac ban giup mik, tuy day la mon lich su nhung nho cac ban giup mik nha , tick cho, cam on