Cho tam giác ABC vuông tại A có AH là đg cao,BH=10,CH=42.Tính BC,AH,AB,AC

Cho tam giác vuông ABC vuông tại A có BC=40 AC=36.Tính AB BH CH AH

Cho tam giác ABC vuông tại A có AC=5,AB=4.Tính

a/Cạnh huyền BC

b/hình chiếu AB và AC trên cạnh huyền

c/Đường cao AH

Cho tam giác ABC vuông tại A có AB=9 , BC=15,AH là đường cao.Tính BH,CH,AC,AH

Một mảnh đất hcn có chu vi 600m,chiều dài hơn chiều rộng 190m.Tính diện tích mảnh đất

Cho tam giác ABC có AB=7_AC=6 BC=4.Kẻ đg phân giác BE của ABC biết E thuộc AC.Tính AE và CE

Sắp xếp

1/to/me/very/siting/nervous/ the man/next/is

2/made in/dongs/is two hundred/thousand/the electric/fan/Japan

3/her favorite television program/there was/while/Mary/a power-cut/was watching

4/buys/Ashley usually/made by/The Bakery House/bread

5/over there/see the/boy/riding/do/you/the/ water/buffalo

6/were/playing/horse race/when I/came/chess/back/my children

7/on/the/santa claus/saint nicolas/description/is/of/ based

8/contest/participated/many/ rice cooking/how/the members/in/?

1/Tom climbed the tree because he wanted to get a better view

2/Lan gets up early so that she won't miss the bus

1/Some has locked this door

2/This team will win the prize by any means

3/The smell of fresh paint greeted hundreds

4/People have laughed at the joke for many years

5/No one helped her to solve that problem

6/Jane doesn't drink tea very often

1/Someone has locked this door

2/This team will win the prize by any means

3/The smell of fresh paint greeted hundreds of puplils

4/People have laughed at the joke for many years

5/No one helped her to solve that problem

6/Jane doesn't drink tea very often