Cho hình bình hành ABCD, Kẻ AH vuông góc với CD,CK vuông góc với AB.

a) Chứng minh DH = BK, từ đó suy ra CH = AK

b) Chứng minh AHCK là hình bình hành

6.__________ do the local people go the market?
- Almost people walk and some ride the horse.
7.__________ is the ceremony held by the Bru-Van Kieu?
-Before sowing seed
8.__________ kinds of good are sold at the open-air market?
- The local products such as fruit and vegetables.
9.__________ is it from the town centre to
-About 35 kilometres
`0._________ musical intruments are on display in the museum?
-The Coho's