Cho tam giác ABC vg tại A(AB<AC) có đường cao AH.Từ H vẽ HE vg góc với AB,HF vg góc với AC. a.C/m:AE.AB=AH bình => AE.AB=AF.AC b.C/m:tam giác AEF đồng dạng với tam giác ACB => góc AFE = góc ABC

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.