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Đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018 có đáp án chi tiết - Ôn Thi Tốt

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Home Đáp án đề thi vào lớp 10 Đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018 có đáp án chi tiết

Đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018 có đáp án chi tiết

Đáp án đề thi vào lớp 10 By
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 · 26/12/2017 · 0 Comment Share

Đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018

Câu 4:

Cho nửa đường tròn (O) đường kính AB= 2R. Gọi (d) là tiếp tuyến của (O) tại B. Trên cùng AB lấy điểm M tuỳ ý (M không trùng với A và B), tía AM cắt (d) tại điểm N. Gọi C là trung điểm của AM, tia CO cắt (d) tại điểm D

1. Chứng minh OBNC là tứ giác nội tiếp.

2. Chứng minh: ON ⊥ AD và CA. CN = CO. CD

3. Xác định vị trí điểm M trên cung AB để tổng AN +2AM đạt giá trị nhỏ nhất.

 Đáp án chi tiết Đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018

Trên Đây là đề thi vào lớp 10 môn toán tỉnh Thanh Hóa năm học 2017-2018 và đáp án chi tiết giải một số câu khó, các em tham khảo để chuẩn bị tốt cho kì thi vào ngưỡng cửa cấp 3 của mình nhé. Đề thi vào lớp 10 môn toán tỉnh thanh hóa là một trong những đề thi khá hay và có một số câu khó,các em tham khảo nhé, chúc các em học tốt.

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