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LONGPHAM2122
2 năm trước
Tam giác ABC nhọn có M ( 3,-1) là trung điểm BC, đt AC qua E( 1;3), D( 4,-2) đối xứng A quá tâm đtron ngoại tiếp tam giác ABC C thuộc d: x+2y-3=0 và có hoành độ dương. Tìm toạ độ các đỉnh tam giác ABC
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Read the following passage and choose the best answers by circling a, b, c or d (2marks). Louis Braille was born in France in 1809. His father had a small business. He made shoes and other things from leather. Louis liked to help his father in the store even when he was very small. One day, when Louis was 3 years old, he was cutting some leather. Suddenly, the knife slipped and hit him in the eyes. He soon became completely blind. When he was 10 years old, he entered the National Institute for the blind in Paris. One day, his class went to visit a special exhibit by a captain in the army. One thing was very interesting for Louis. It showed message in code. Armies send messages in secret codes so no one else can read them. The captain wrote this code in raised letters on very thick papers. . . 1. When was Louis Braille born ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. What did his father’s business make ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. Why did he become blind ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. In what year did he enter the National Institute ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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