Tính chất đường phân giác của tam giác

Home Lớp 8 Toán lớp 8 - Sách Kết nối tri thức Bài 17 - Tính chất đường phân giác của tam giácBài tập trung bình

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\" y=\"2.00001\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"161.95453\" xml:space=\"preserve\" y=\"210.49999\">7 cm<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"67.95453\" xml:space=\"preserve\" y=\"90.49999\">4,5 cm<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(61.41809844970703 317.46804809570307,86.15657806396486) matrix(0.9861128330230713,0,0,0.9257160425186157,4.90153890063084,8.236956948054285) \" x=\"280.95465\" xml:space=\"preserve\" y=\"92.53705\">3,5 cm<\/text> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"2\" x1=\"263.95453\" x2=\"355.95453\" y1=\"29.49999\" y2=\"187.49999\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(154.58767700195312 266.7743530273438,34.36740875244141) matrix(1.0499913692474365,0,0,1.150530219078064,-13.654887427022913,-7.709344324967333) \" x=\"261.07814\" xml:space=\"preserve\" y=\"44.82543\">v<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(-35 352.7743835449219,181.36732482910153) matrix(1.0499913692474365,0,0,1.150530219078064,-13.654887427022913,-7.709344324967333) \" x=\"342.98357\" xml:space=\"preserve\" y=\"172.59261\">v<\/text> <\/g> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> AE ≈ 1,4 cm","B.<\/strong> AE ≈ 1,3 cm","C.<\/strong> AE ≈ 1,5 cm","D.<\/strong> AE ≈ 2,4 cm"],"correct":"1","level":"2","hint":"","answer":"Vì BE là \u0111\u01b0\u1eddng phân giác c\u1ee7a góc ABC và E∈AC nên theo tính ch\u1ea5t \u0111\u01b0\u1eddng phân giác trong tam giác, ta có: <\/p>            $\\dfrac{AE}{CE}=\\dfrac{AB}{CB}$<\/span> <\/p>thay s\u1ed1 $\\dfrac{AE}{CE}=\\dfrac{4,5}{7}$<\/span> <\/p>suy ra $\\dfrac{AE}{4,5}=\\dfrac{CE}{7}$<\/span> <\/p>Theo tính ch\u1ea5t c\u1ee7a dãy t\u1ec9 s\u1ed1 b\u1eb1ng nhau ta có:<\/p>$\\dfrac{AE}{4,5}=\\dfrac{CE}{7}=\\dfrac{AE+CE}{4,5+7}=\\dfrac{AC}{11,5}=\\dfrac{3,5}{11,5}$<\/span><\/p>Do \u0111ó $\\dfrac{AE}{4,5}=\\dfrac{3,5}{11,5}$<\/span> suy ra $ AE=\\dfrac{4,5\\space.\\space 3,5}{11,5}\\approx1,4$<\/span> (cm)<\/p>Ch\u1ecdn A.<\/strong> AE ≈ 1,4 cm<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-06 02:53:05","option_type":"txt","len":2},{"id":"6228","post_id":"6584","mon_id":"1158921","chapter_id":"1158932","question":"Cho tam giác ABC có AB = 2AC và AD là \u0111\u01b0\u1eddng phân giác c\u1ee7a góc BAC (D∈BC). Tính t\u1ec9 s\u1ed1 $\\dfrac{CD}{BD}$<\/span>.<\/p><svg height=\"170\" width=\"280\"> <g><title><\/title><rect fill=\"#fff\" height=\"172\" id=\"canvas_background\" width=\"282\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_8\"> <path d=\"m78.42476,25.54005l170.99999,112l-232.99999,2z\" fill=\"#d4aaff\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\"><\/path> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"0.95453\" xml:space=\"preserve\" y=\"150.88635\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"58.95453\" xml:space=\"preserve\" y=\"23.88636\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"251.95452\" xml:space=\"preserve\" y=\"156.88635\">B<\/text> <line fill=\"none\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"16.95453\" x2=\"137.95452\" y1=\"138.88635\" y2=\"65.88636\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"141.95453\" xml:space=\"preserve\" y=\"63.88636\">D<\/text> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(-33.9047737121582 44.95452880859378,106.52273559570314) \" x=\"40.95453\" xml:space=\"preserve\" y=\"114.88635\">)<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" transform=\"rotate(-30.77054786682129 54.954528808593714,125.52272033691403) \" x=\"50.95453\" xml:space=\"preserve\" y=\"133.88635\">)<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> $\\dfrac{CD}{BD}=\\dfrac{1}{3}$<\/span>","B.<\/strong> $\\dfrac{CD}{BD}=\\dfrac{1}{2}$<\/span>","C.<\/strong> $\\dfrac{CD}{BD}=\\dfrac{2}{1}$<\/span>","D.<\/strong> $\\dfrac{CD}{BD}=\\dfrac{2}{3}$<\/span>"],"correct":"2","level":"2","hint":"","answer":"Vì AD là \u0111\u01b0\u1eddng phân giác c\u1ee7a góc BAC và D∈BC nên theo tính ch\u1ea5t \u0111\u01b0\u1eddng phân giác trong tam giác, ta có: <\/p>$\\dfrac{CD}{BD}=\\dfrac{CA}{BA}=\\dfrac{CA}{2.CA}=\\dfrac{1}{2}$<\/span><\/p>Ch\u1ecdn B.<\/strong> $\\dfrac{CD}{BD}=\\dfrac{1}{2}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-06 03:00:42","option_type":"math","len":0},{"id":"6229","post_id":"6584","mon_id":"1158921","chapter_id":"1158932","question":"Cho tam giác ABC có AD là \u0111\u01b0\u1eddng phân giác c\u1ee7a góc BAC (D∈BC). 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epttWbp0qRhA2FYiuM6bJxMVLaujaof29Ysv9EcRyFmzZvE4AIGDeppt6d69uxg4r75qHFwwcGZn60nq0CH1MdC+nj2rsT599D7w+OOP8zgAgYF6mS35888\/WfHixVmpUkXY778bBxYMrPfcIxPU9Onqdmh\/p07VC9Vdd93Ffv75Zx4HwD+od9mSlStXisFy\/\/3GwQQDLz1HQ+f7ttvU7TA8fOcdjdWoIftC1apV2fr163kcAN+hnmVL6CMHGih4fqdwPH5c\/yv6u+\/Ux8DwkNZ1pEcSnP1h4sSJPA6Ab1Cvsh1\/\/fUXK1euHCtaVE6Rdh9EMDh26iST0pQp6nYYXg4erBeqnj178hgA3kO9yXa8\/fbbYmBgTbnCdfFimZCaN1e3w\/Bz7ly9UN16663sm2++4XEAPId6ku0YOHCgGBS0L477oIHB8+RJPSHt368+BoafH3ygseuuk\/2ifPny4vtiADyFepGtOH\/+PIuIiBAD4sAB44CBwfWBB2QymjBB3Q7D08OH5SQm5x8xY8aM4XEACoZ6kK3YsGGDGAQxMcaBAoPv66\/LJBQVpW6H4e3TT+uF6sEHH2T\/\/fcfjwOQN9RzbMXw4cPFAHjhBeMAgcH3r780MWGFrsFXX6mPgeHtkiUaK11a9pHrr7+e7d69m8cBUEO9xlbUqVMHCTLEOlfJpkVIVe0Qpqdr7OabZT+hh+6Tk5N5HAAj1GNsw9atW0WnxwOloXXlSpl8mjRRt0NI\/vmnxh55RPYV8sknn+RxAHJDvcU2jB49WnT25583DghYeP73H22KJxPP55+rj4HQ6fjxeqFq3769WNIMACfUS2xD48aNRUf\/7DPjQICFq\/Mv5DFj1O0Qurp6tcauuUb2mWuvvZZ9+OGHPA6A7CG24JNPPhEdnD7ndh8AsPBds0YmnAYN1O0Qurt3r8buvFO\/q5o9ezaPg3CHeocteO6550THxl\/u5rFsWZlsPv1U3Q6hu\/\/+q7H+\/fVChW0\/APUMW9CsWTPRqT\/80NjxYWjs1UsmmlGj1O0Q5iVt+eIsVK1atWKHDx\/mcRCOUI+wPJ9\/\/rnozJhNZi7ffVcmmTp11O0Q5mdqquw71IeqVKnC3nvvPR4H4Qb1BsszefJk0ZFHjDB2dBhar75aJpnt29XtEObnDz\/IhaKpD5GTJk3icRBOUE+wPHfeeafowJs2GTs5DK19+8rkMmyYuh1CTxw+XC9U3bp14zEQLlAPsDT79u0THbdePWPHhqF3wwaZWGrWVLdD6KkLFmisWDHZn+g7aGz7ER7Q1bc0M2bMEJ120CBjp4bmsHJlmVjS0tTtEHoqTYy6\/nrZn2hj01WrVvE4sDN05S3NPffcIzrsO+8YOzQ0hwMHyqQSH69uh9AbjxzRWGys7FPkM888w+PArtBVtywHDx4UnbRGDY1duGDszNAc0qZ3dJ2qVFG3Q+iLY8fqhapjx47s3LlzPA7sBl1tyzJv3jzRQePijB0Ymsvq1WUyef99dTuEvrh8Oe32K\/sWLYtGj6MAe0FX2rJ06dJFdM5Vq4ydF5rLIUNkIqHVBFTtEPrq7t0ai46W\/atYscvZq6++yuPALtBVtiQ\/\/\/yz6JS0KOXZs8aOC80lfeFN16tiRXU7hP545ozGeveWfYwcMmQIjwM7QFfYktAmadQZH33U2GGhOa1dWyaQ995Tt0Por7Qjt7NQtW3blp04cYLHgZWhK2tJHnroIdERX3vN2FGhOU1IkMmjTx91O4SB8O23NVatmuxrkZGR7KOPPuJxYFXoqlqOo0ePshIlSrBy5Yqw48eNnRSa008+kYmjXDl1O4SBMjNTY23a6HdVc+bM4XFgReiKWo7ly5eLjkfPSrh3TmhuaWUQunb0166qHcJAefGifDbPWaji4uJ4HFgNupqW47HHHhOdbtEiY8eE5vbpp2XC6NlT3Q5hoJ0zRy9UtM7nL7\/8wuPAKtBVtBSnTp1i5cuXZyVLFuGdzdghobmlrf0pWZQqpbHz59XHQBhoN2\/WWP36su9VrlyZpaam8jiwAnQFLcWbb74pOtp99xk7IrSGjRrJZLF6tbodwmD4888yb1DfI2mLH2B+6OpZin79+okO9tJLxk4IraFzOZuHH1a3QxhMn3pKL1Q0SxiYG7pqluGff\/5hVatWZUWKaOzgQWPng9YwI0MmiOLFNX5N1cdAGExffVV+5Ez98JZbbmHffvstjwMzQlfMMqxbt050qrvvNnY6aC1vvFEmiJQUdTuEwZYeibjpJtkPy5Yty1avXs3jwGzQ1bIMgwcPFh0qKcnY4aC1\/L\/\/k8nhwQfV7RAWhn\/8obHu3WVfJBMTE3kcmAm6Upbh2muvFR1p3z5jZ4PWkq4hXUv66JbWXVMdA2Fh6fyjiezUqRM7f\/48jwMzQFfIErz\/\/vuiA7VqZexg0JrecotMCsuWqdshLExpN4VKlWSfbNSoEfviiy94HIQaujqWYOTIkaLzTJpk7FzQmk6eLBMCHieAZvHLLzXWsqXsl0WLFmWLFy\/mcRBK6MpYgiZNmoiOQ3vHuHcsaE2\/\/VYmA\/LPP9XHQFjY0ozTvn31vjl06FAeB6GCrorpoVWMqbPQxmbuHQpaW+dmdcnJ6nYIQyVN0HIWqtatW7OTJ0\/yOChs6GqYHppxQx1l3DhjR4LWdto0mQTat1e3QxhKae8z5z5otWrVYtu3b+dxUJjQlTA9zZo1E51kxw5jJ4LW9ocf9L9Wjx5VHwNhKKWFA+69V++nL730Eo+DwoKugqnZuXOn6BhRUcbOA+2h84vql19Wt0NoBocN0wtV3759eQwUBnT2Tc348eNFp6D1ttw7DbSHM2fKgd+unbodQrNIf0hdfrnsr\/QJz6+\/\/srjIJjQmTc1d9xxh+gQW7YYOwy0hz\/9pP+Fiu1XoNndtk1jjRvL\/lqpUiW2YcMGHgfBgs66admzZ4\/oCLS1g3tHgfYyJkYOetqgTtUOoZn87Te5pJfzj6sXXniBx0EwoDNuWqZOnSo6wNChxk4C7eXcuXKwt26tbofQjCYm6oXq4Ycf5jEQaOhMm5a2bduKi5+aauwc0F7SX6bOwf7jj+pjIDSjr72msXLlZN+l5ZQOHDjA4yBQ0Fk2JZmZmeKi16lj7BTQnt5zjxzo06er2yE0q7t2aezWW2X\/LV26tNhBHAQGOsOmZPbs2eKCDxhg7BDQni5YIAf57ber2yE0s6dOaeyxx2QfJseOHcvjwF\/o7JqSjh07igu9dq2xM0B7euyYPsCx8zK0qs6Fk8nOnTuzCxcu8DjwFTqrpiMrK0tc4GrVNPb338ZOAO1rp05ycE+Zom6H0AquWaOxqlVlX65fvz7LyMjgceALdEZNxyuvvCIubp8+xosP7e3ixXJgN2+ubofQKu7frz9aUaRIEbZkyRIeB95CZ9N0dO3aVVzYN94wXnhob0+elIOazMxUHwOhVbxwQWMDB+p9etiwYTwOvIHOpKmgZUZKlizJKlbEHkPh6v33ywE9caK6HUKrOXu2XqjuuusudurUKR4HnkBn0FTQLTFdyB49jBcahof03An1ASwqDO3kpk0aq1dP9u2aNWuyHTt28DgoCDp7pqJHjx7iIi5ZYrzIMDw8e5a27paD+auv1MdAaEXpQfXOnfW7qrlz5\/I4yA86c6bh+PHj7KqrrmJlyxYRKxC4X2AYPsbGykH83HPqdgit7MiReqHq168fj4G8oDNmGt544w1x0bp2NV5UGF7SpBnqC9dfr26H0OomJ2usZEnZz5s3b87\/MP+Nx4E7dLZMQ58+fcQFe+UV4wWF4eW\/\/+oD+PPP1cdAaHU\/\/lhjTZvKfl6xYkW2ceNGHgeu0JkyBWfPnmXVqlVjxYppLCvLeDFh+EmTZ2jwPvOMuh1CO0grrTz8sOzr5JQpU3gcOKGzZArWrl0rLlDHjsaLCMPTt96Sg\/a669TtENpJ+v7VWai6d+\/OY4Cgs2MKBgwYIC4OPU\/gfvFgeHrxosbKlpWDdudO9TEQ2kn6LpaeEaU+37hxY\/bdd9\/xeHhDZybknDt3jtWpU0dcmG++MV44GL726iUH7KhR6nYI7eaePXInAOr3pUqVYm+99RaPhy90VkJOamqquCBt2xovGAxv331XDtZrr1W3Q2hHaWHtuDjZ98lnn32Wx8MTOiMhZ+jQoeJCTJtmvFgQXnWVHKg7dqjbIbSrL76oF6r77ruPXbx4kcfDCzoTIYe2XKaLQLe57hcJwr595SAdNkzdDqGdXbdOY7VqyTFQq1Ytnif38Hj4QGchpGzZskWc\/JYtjRcHQnLDBjlAa9ZUt0Nod7\/7TmN3363fVS1dupTHwwM6AyHl6aefFid9wgTjhYHQ6TXXyMG5dau6HcJwcMgQvVANHz6cxwqZcydY5tYUljSwK4uJjrz0u2haJGvRriuLn5bC0g6ecBwcGOidh5SoqCjxJjHFGObngAFyMAwerG6HMFycP19jl10mx0NMTAw7ffo0jweZc9ksbU4ci4lwFqX8jYxNYmnZjtf6Cb3rkPHxxx+LN4RdWGFBbt4sO3+VKup2CMPJtDSNNWokxwQtpxTUbT+OpbHEuyIuFSBNi2ANO8ezxDkpLHVrGkvjpq6YyxIHdmCRl47hRsSwiZ\/mOP4R36F3HDLGjRsn3kxiovEiQOhutWqy87\/\/vrodwnDy11\/lYtzOojBv3jweDzCHUll8tP4zIjpPzP8O6UQmS3myxaXjtYgeLOWQo81H6N2GjOjoaPFGPvrIeAEgdPfJJ2XHf+IJdTuE4eiYMXoR6d+\/P48FiiyW0lO\/g2rxZCqPeELu12mxKcyfT\/7oXYaE3bt3izdwww3Gkw6hym3bZKevVEndDmG4umyZvoTYrbfeyrKz\/f9C6MS6eBbhLDTRSSzDEfeIY\/wO7NL3VxEscavvH\/vROwwJkyZNEm+ANv9yP+EQ5mXt2rLjv\/eeuh3CcJUmnzVrJsdHmTJl2KZNm3jcV7JYcnu9yCRs9r7IZEyLYS1i41ni4jUs43CAilT6eOcvVZD6dMN0H39469atxb9FX4i7n2wI83LECNkHH39c3Q5hOHvypMZ69tRz9dSpU3ncB\/YksSjHv6FFTGTpjnAooHd2Cc+LlKsRLObZNObNzPi9e\/eK1zZoYDzJEOYnbRJHfad8eXU7hFBjEyfqObpHjx485h1Zr3W99HptVBrzf46e79A7uoRrkYqMjmEx7fKwiet0RGmL8ekev5Hp06eL19AX4e4nF8KCrFdP9rl33lG3Qwjlfmz0yAaNFdr24+DBgzzuGenP6rm962ueTZcIFvRuLuFapCZ+6gjmxbkTLGNxnMu8+CiP58Tfc8894jXr1xtPLIQF+fTTss\/RxxqqdgihdN8+jbVuLcdLiRIl2Jo1a3i8ILJZSqwzr2ssfl1gV5DwFnonl\/CqSDnImCZXjBB6cFtIm3jRsfQF+D\/\/GE8qhAX52Weyv5UurbELF9THQAil587pK7aQ9Hxq\/uQuUp7WgmBB7+ISvhQpdjCZxTheo7VLLnAe\/dy5c8Wx\/fsbTyaEntqwoexzb76pbocQ5nbmTD2\/d+nShcfywm5F6nAK6+p4jda04Ln0tCcKHYvkAv2RVimhfvTww+p2CKHRjRs1VreuHDu1a9dmX375JY+7k83WuMwQtPzHfbmmKg5MzXeW308\/\/cRKliwpvsw7dcp4AiH01IwM2eeKF8fHxhB646FDGuvYUc\/1y5Yt4\/HcZEzWJ8fFLLTqxAlBDksb5XwzBT9VvGjRInHsY48ZTxyE3kqrlVB\/WrFC3Q4hzNuEBD3fjxgxgsd0aLUJZ1tBNx95cjCZdY2Wz9Om7vF9BQz6bS\/hcZHKOcGyv0llc\/voCwl6MgU9NjZWHLt8uVziBkJ\/7N1bY5GRGuvVS90OIczfhQtp1p\/M4W3atOGxbTJZu36NE5HI0jx9vsiF7BUuz1r5sX5fnkXKcyNZ12npBVbaI0eOsPLlyyleDyGE0AxGRtZmGzZs4BnbdfKEL8siuS6rpLGuK4JwJ+WxdTuw+DlpLPuc4x\/Jg9dee039egghhKZyzpw5LGdzgssCsxNZhhd1KtdrI+JZ6jFHgw\/kWaTyXXHirob6L+C0bpzf+4YAAAAwC1m5pqK3GOPh8neHUlgPlx18O\/g58cK376QcnPgmlU3s7LJEUkQCSzvjaAQAAGBt3AqO2PQwn0XFs7dOZB1cj++ZUuCzswXhV5ESnMtkc10+e4ya5tWuIwAAAExMzjfJuQoVGdnedfv4VJYyJ4HFRUfmOiaicxLLCMBNi\/9FikOfP1765Tx4oBcAAICFoG3hh8cYv+ZR6tlkOk8JSJHKNV1RC+3eIwAAAIJDzuEMtmZxIouPjWEtHCtXCCMaspjYeJa0Io1l+jFJQgWKFAAAANOCj\/sAAACYlgAUqdwPbWHiBAAAgEDhV5HKOZzGkmJdZ3R0YMmeb\/4IQN7k+gi5AOu2YDHt4ljCnBSWns\/0WACA9cizSOX7MC8315dmwgjWY0VoV8sFNsKbIuVmZOxclhGoqUUAgJCSZ5HyyogYlrAis8AFZgHwmFxFKpK1UPyh5LSh2zMcwrpxbA1WQAHA8vhcpMSdVp8Elrw2g2WjOoFA4+2M0TNZLH1xAotxLVjR\/HVYAQUAS5OrSAFgGnx9rMFtGZeoZwveQgYAYF5QpIA58bVIcXJ2JOq7RWMyDwCWBkUKmBM\/ihRjJ9iaPs7X8rupGXgsAgCrgiIFzIlfRcrtAfN2yX6vxAwACA0oUsCc+Fmk2IlUFn\/p9fEsFVPSAbAkKFLAnPhbpFgGm3hpAkUUS9rjCAMALAWKFDAnfhep7Fy7inq1YDIAwDSgSAFzgiIFAOCgSAFzgiIFAOCgSAFzgiIFAOCgSAFz4neRSmcTL70+Bg\/0AmBRUKSAOfG3SB1yfX0CS8PaSABYEhQpYE78LFIn1sY5XsuNTWHZjjgAwFqgSAFz4leRyv19VIfFWG8CAKuCIgXMiR9FKvcCs3FszTFHAwDAcqBIAXPia5Fy26qjBRaXBcDSoEgBc+Jlkco5lslS58QZNj3MwIQJACwNihQwJ7mKVH7bx7dgkZeOczE6nqVi+3gALA+KFDAnuYqUN0awmOEpLBOrngNgC1CkgDnxokhFRvM7qj4JbO6KNJaJSRIA2AoUKQAAAKYFRQoAAIBpQZECAABgWlCkAAAAmBTG\/h\/mapbzqZ7kZAAAAABJRU5ErkJggg==\" y=\"0.49999\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"36.95453\" xml:space=\"preserve\" y=\"150.49999\">12 cm<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"84.95453\" xml:space=\"preserve\" y=\"214.49999\">28 cm<\/text> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"16.95453\" x2=\"238.95453\" y1=\"189.49999\" y2=\"189\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(90 21.318161010742163,189.68182373046878) \" x=\"16.95453\" xml:space=\"preserve\" y=\"195.49999\">v<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(-90 233.31816101074222,188.68179321289065) \" x=\"228.95453\" xml:space=\"preserve\" y=\"194.49999\">v<\/text> <\/g> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> $\\dfrac{AC}{AB}=\\dfrac{4}{7}$<\/span>","B.<\/strong> $\\dfrac{AC}{AB}=\\dfrac{3}{7}$<\/span>","C.<\/strong> $\\dfrac{AC}{AB}=\\dfrac{3}{4}$<\/span>","D.<\/strong> $\\dfrac{AC}{AB}=\\dfrac{4}{3}$<\/span>"],"correct":"4","level":"2","hint":"","answer":"Ta có: CD = BC – BD = 28 – 12 = 16 (cm)<\/p>Vì AD là \u0111\u01b0\u1eddng phân giác c\u1ee7a góc BAC và D∈BC nên theo tính ch\u1ea5t \u0111\u01b0\u1eddng phân giác trong tam giác, ta có: <\/p>$\\dfrac{AC}{AB}=\\dfrac{CD}{BD}=\\dfrac{16}{12}=\\dfrac{4}{3}$<\/span><\/p>Ch\u1ecdn D.<\/strong> $\\dfrac{AC}{AB}=\\dfrac{4}{3}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-06 03:05:35","option_type":"math","len":0}]}