Ôn tập chương III
Hướng dẫn giải Bài 96 (Trang 105 SGK Toán 9 Hình học, Tập 2)
<p>Cho tam gi&aacute;c ABC nội tiếp đường tr&ograve;n (O) v&agrave; tia ph&acirc;n gi&aacute;c của g&oacute;c A cắt đường tr&ograve;n tại M. Vẽ đường cao AH. Chứng minh rằng :</p> <p>a) OM đi qua trung điểm của d&acirc;y BC ;</p> <p>b) AM l&agrave; tia ph&acirc;n gi&aacute;c của g&oacute;c OAH.</p> <p><strong>Giải :</strong></p> <p>a) V&igrave; AM l&agrave; tia ph&acirc;n gi&aacute;c&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>B</mi><mi>A</mi><mi>C</mi></mrow><mo>^</mo></mover></math> n&ecirc;n</p> <p><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>B</mi><mi>A</mi><mi>M</mi></mrow><mo>^</mo></mover><mo>=</mo><mover><mrow><mi>M</mi><mi>A</mi><mi>C</mi></mrow><mo>^</mo></mover></math></p> <p><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>&#8658;</mo><mover><mrow><mi>B</mi><mi>M</mi></mrow><mo>&#9180;</mo></mover><mo>=</mo><mover><mrow><mi>M</mi><mi>C</mi></mrow><mo>&#9180;</mo></mover></math></p> <p>Suy ra M l&agrave; điểm ch&iacute;nh giữa của cung&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>B</mi><mi>C</mi></mrow><mo>&#9180;</mo></mover></math>, từ đ&oacute;&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>O</mi><mi>M</mi><mo>&#8869;</mo><mi>B</mi><mi>C</mi></math> v&agrave; OM đi qua trung điểm của BC (định l&iacute;).</p> <p>b)&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>O</mi><mi>M</mi><mo>&#8869;</mo><mi>B</mi><mi>C</mi><mo>,</mo><mo>&#160;</mo><mi>A</mi><mi>H</mi><mo>&#8869;</mo><mi>B</mi><mi>C</mi><mo>&#160;</mo></math>vậy OM//AH, từ đ&oacute;<img class="wscnph" 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" width="135" height="148" /></p> <p><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>H</mi><mi>A</mi><mi>M</mi></mrow><mo>^</mo></mover><mo>=</mo><mover><mrow><mi>A</mi><mi>M</mi><mi>O</mi></mrow><mo>^</mo></mover></math> (so le trong)<span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span>(1)</p> <p><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>&#8710;</mo><mi>O</mi><mi>A</mi><mi>M</mi><mo>&#160;</mo></math>c&acirc;n (OA = OM)&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>&#8658;</mo><mover><mrow><mi>O</mi><mi>A</mi><mi>M</mi></mrow><mo>^</mo></mover><mo>=</mo><mover><mrow><mi>A</mi><mi>M</mi><mi>O</mi></mrow><mo>^</mo></mover></math><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span><span class="mce-nbsp-wrap" contenteditable="false">&nbsp;&nbsp;&nbsp;</span>&nbsp; (2)</p> <p>So s&aacute;nh (1) v&agrave; (2), c&oacute;&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>H</mi><mi>A</mi><mi>M</mi></mrow><mo>^</mo></mover><mo>=</mo><mover><mrow><mi>O</mi><mi>A</mi><mi>M</mi></mrow><mo>^</mo></mover><mo>.</mo></math></p> <p>Vậy AM l&agrave; tia ph&acirc;n gi&aacute;c của&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mrow><mi>O</mi><mi>A</mi><mi>H</mi></mrow><mo>^</mo></mover></math>.</p>
Hướng dẫn Giải Bài 96 (Trang 105, SGK Toán Hình học 9, Tập 2)
GV: GV colearn
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Hướng dẫn Giải Bài 96 (Trang 105, SGK Toán Hình học 9, Tập 2)
GV: GV colearn