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tntkhiem
2 năm trước
Cho tam giác ABC vuông tại A (AB <AC), đường cao AH a) Chứng minh tam giác HBA đồng dạng với tam giác ABC b) Chứng minh AB ^2=BH.BC. Tính AB, AH biết BH=3cm, BC=12cm
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dear Charlie, My name's Maya Taylor. I'm from Sydney in Australia. I've got two brothers and a sister. I'm the one with long dark hair and brown eyes. My sister has got fair hair. My brothers are tall but my sister and I are quite short. a photo of me with my My school is called Jamison High School. It's a very big school. It's got about 1,000 students. I've got French on Tuesday and Thursday and Spanish on Wednesday and Friday. I also like art and music. I've got piano lessons on Monday after school and I've got singing lessons on Saturday. subjects are French and Spanish. We've got a lot of homework at my school and I haven't got time for other activities. But I go to my friend's house at weekends or she comes to mine. We're into music. Our favourite type of music is hip hop. Are you interested in music? and tell me about yourself. Best wishes, Maya

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