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G&oacute;c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng AB v&agrave; BD b\u1eb1ng bao&nbsp;nhi&ecirc;u \u0111\u1ed9?<\/p>","options":["<strong>A. <\/strong>30&deg;","<strong>B. <\/strong>60&deg;","<strong>C. <\/strong>45&deg;","<strong>D. <\/strong>90&deg;"],"correct":"3","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.&nbsp;<\/strong>45&deg;<\/span><\/p><p>Ta c&oacute;: &Delta;ABD&nbsp;vu&ocirc;ng c&acirc;n n&ecirc;n (AB, BD) = 45&deg;.<\/p><p><span class=\"svgedit\"><svg height=\"178\" width=\"236\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"180\" id=\"canvas_background\" width=\"238\" 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>&lt;title&gt;&lt;\/title><image 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RhmuYyn48FGZWqu1TfR8TmFgb\/5\/bsTZLbCF2fdNNIoUKGbFiDg8atES1UTrO77bXXntNp7lG4rzcs2ePGuj7K+HXl7UxPCI\/MIJldr3gggu0ICtWrKi9wosXL05p8+fPl\/bt2+v7zMDr1q1zvpk1SDPs3l2kdGljDlGClLBtEJ1LGWFziaNn4UKT+MKGDcR6yy0kxhyThx4aqN6F0qka72GjRo10iPBwJo4MREoKLdagn+mwoQRGsIRq8il7FEG2adNGmxc4ltyGycGo586yr1LeIYuw5qOj3BKUf\/ubKWYWb2mGOJ2YKUJP6bakhaUDaYZs2sATTL8PGWJOi\/v66+3SunXrlHfL205Wphd57Ig2HDhFEThLOt7dWBEYwa5YsUI\/oPLly+vUwvTMkKlTp0qZMmX057p06eJcjRw6bflyU9LDHWHZIkfVwewU9M4trJc4cqZMMWcZsfRhoOboDHdVhaOzSpUq+r1iltyyZYts3LhRpk2bpjeccP0UpZJwCTuLFi3Swh44cGCms3F2CIxg8fqyh5XR6bcMItU4mti9w+f2Yg9GwQxlNzZu3EyqVn1I8ub9VouVI\/9wMsSr08YKNjy8S6wr2bVVqNA01ed\/ao8wp8V5ramZM2em+E7uuusuPVnQ2HwyRE3DRYoU0feITmQESzaWas8++6z+XqwIlNMpVpB7XKAAucibVBuiWj\/VDunaSxTNitfG3x\/PNh2Y3v1kb4UL36lE9Lzq622q1ZV69RbqmktYWl7efPPNlAgE4vXCPuyzlR3NvRJk02QA+7TZr+3X7rCMSArBrl69WnXc5eqh\/6b+nKnWyo+oFx0RmxfetkRs+5Ql1UX1OVstj0mxYvcpS2RSGmsK38iECRO0IGluoo7LsmXLpE6dOvpeOMHmFEkhWJxWpUufox56N\/XQb5Q775yiTJc\/VRPbErhdc82jSrg4k\/orU7hRussoZsROnTppQebNm1c2U1rCw7x58+TMM8\/U9\/Gf5DZJIVho1WqXeujvSLNmG1WnBDh9KQqYLUj8CDXxLIa5c49K1apbVL\/PlEceST9et23bthSTt27durJz507njoFMO3d9S\/Qit0kiwapfqn7rpZcmTiofyV6cL\/v1184FSyref9\/stKLfBw1yLoaAR7hUqVJakGw08a5BcX7269cvZX37Ft6qXMYKNo6xXuLwRCLYTZs2qZe\/sBYks6kbocDTi8OpSZMm+h4x1mgjE7HACjaOsYINTySCXbhwoRYkbfz48XLgwAEdVaCAAlU3WdcWK1ZMxlHfNABYwcYxVrDhiUSwbiUTWseOHWXs2LHaDGZdS5YT69fOnTvHPFwTKVawcYwVbHgiEWy9evVSBOttVDo555xzpHfv3noHTiQbAHICK9g4hn2bFAtjL68lLZEI9vbbb1fvRqs0jRJFJFFgIgcJK9g4hpAOeeYBe6cCQySCJazDDOpt5AzH4ogXP7CCtSQskQg23rCCjWPcQuIhsX6LgxWsf1jB+gCFxAcMEHn7beeCJRVWsP5hBesD1kscHitY\/7CC9QEr2PBYwfqHFawPWMGGxwrWP6xgfcAKNjxWsP5hBesDrpcY4VrSYgXrH1awPsFe2IBkzQUOK1j\/sIK1xBwrWP+wgvUBjsV8+mlTHNuSFitY\/7CC9QHrdAqPFax\/WMH6gBVseKxg\/cMK1gesYMNjBesfVrA+wLkwnBQ+ebJzwZIKK1j\/sIL1gUOHzNm2K1Y4FyypsIL1DytYS8yxgvUPK1gfIGGCQ6mpPGFJixWsf1jB+gDHJVLPaf1654IlFVaw\/mEF6wPWSxweK1j\/SDrBUlH+l19+SdOOHj2a5RKaVrDhsYL1j6QT7OzZs3WB6tA2ePBgfeI81fqixQo2PFaw\/pFUgv39999TVZgPLVhdrVo1fSzEhg0bnG9EhhVseKxg\/SOpBEsxao57QKAc\/3DDDTfoRsHq6tWr66P2uX7nnXc634gMComPHMkZps4FSyqsYP0jqQS7Y8cOuf7667VgS5YsKevXr9dt3bp18sILL0jlypX1PcQbDYRzvvvO7NqxpMUK1j+SSrCfffaZNGjQQIuS4\/e9rFy5UmrXrp3uPUv2sIL1j6QS7Ouvv64e8ilalNdee62aEX9W5uw+WbNmjT7bhXuYxAMoMhwFamksW7ea+sSWtFjB+kfSCPYPZbc+\/fTTWqy0MmXKyAUXXKAbp6NxnCHnj953332yi2z+KPjxR1HfE5k+3blgSYUVrH8kjWCJsw4fPjxFsOm18uXLy+LFi51vRI71EofHCtY\/kkawBw8elL59+2phFi9eXKZOnSpz586VOXPmqAf+L+1wypcvnzRs2ND5RuRYwYbHCtY\/kkaw33zzjfqdl2rBnnXWWbJ7925tJtP2qMUn8VfucTR\/tFjBhscK1j+SRrCrV6\/W61RE2bRpU+1wctm7d6\/cdNNN+h4tWqxgw2MFa5J23nvvPe3QxG9y2WWX6ew6zsWNhqQQLDnCCxcuTBEkD809KPjw4cMyfvx47YTiXrly5fT1aHDjsCRQWNKS7ILdtGmTXHXVVToxh+a+h\/w3k8hrr73mfDJzkkaw06dPT3lQp6u3h1grzU2WoJGe+PzzzzvfsvhFMguWGbRFixZanCy3eN+aNWsm9evXlyJFiuj3jj85bT4SkkKwx48fl7Fjx0r+\/PnTNETKA6tYsaIMHDhQ7+aJFjb58DVmWktaklWwWG+PP\/64FCpUSIv1uuuuk0PUE1IcO3ZMevXqpd8\/7t1\/\/\/36emYkhWBxLA0bNkxuvPHGNK19+\/YydOhQWbVqlf5cVjh4UOTll0U+\/dS5YElFsgr2U\/VCEONnFj3\/\/PN1aNHL0qVLpUaNGjpqcfnllztXw5MUgo011ukUnmQULE4m8tMJFSLYKVOmOHdO8MMPP8iECRO09UcWXiRYwfrAN98clTZt9sgzzxyQPzkVy5KKRBTswoV\/KsEeUILdLYMHp11G7d+\/X7p06aLFSrrr2rVrnTvZwwo2m2DmjB8\/TerXf17uuGOyjvdmtXJFopKIgp0yZblam76o1qD\/kR495qasTV1Ib73wwgu1YMuWLZulwgjpYQWbTT77bLn69zRU7S1l\/twlAwZMkAULjumDsVaudD6koKoiWY9cd9uiRWb9CyyfOWPWe5+Gue2S3n01PqTAzwi9T\/OyaVPa+14HJT8v9P7mzc5NhbLitDnovU89Zu\/yP\/TfOWqUCNEy+v2xx8zP896nffaZ82UF70Xo7+Ca+zv4M\/R30Lz+wo0b097\/+mvnpmL37rT3161zbioI0y9blvo+Pgp0efDgYbniilZy0kmj1L9pgZx9drs0Ka3ffvut1KxZU93Po+OubO30AyvYbDJ9+jvq38Me292qjZbKlUdLu3aHpWdPs6ndhY7u10\/0dbc98MAJwREWJqLkvU9bssTcB7UkSnPfu2menxF6n+bl1VfT3p8xw7mpmD8\/7X2+47J8ucjdd6e+\/8QT5ne79O2b+j59XrSo6feHHhIh7Oi9T\/OuA994Q6R379T3ueb6bPhdoc+SpqzQFF56Ke39mTOdmwoGiND7zz3n3FQwqAwcmPr+4MEiW7aIvPLKXqlUqYX696xU7VtlPdyvnqHnISqwtM444wx1P48O64RuKGGX2CI1YlOyaF4UlQ+sYLMBo\/CwYfukevWuUqvWeLn44odU5yyRu+76U5uBjOIux4+b2ZKB1m07d5qZF1j6\/vRT6vs0Sqi6pHffa4nxM0Lv07zwdw69f+CAc1PBzwu970kKk8OH095nt5J36R7670SglSubfkcE6f0dvM8K4YXe55r7O\/gz9HfQeMYuJLGE3vf+O9P7d+zd69xUMFvzd\/LeR6z\/\/a\/IeeeJml3HSOnST0i1av+WPn2G6hnVy07VueepDyLY5s2bq7\/vCVOJJdOsWbOkUaNGUqVKFb3VM1KsYLMIA+bQoaJmU0bzjdrLt2TJp\/LOO79Jly4i99xjXgpLYqxhGTBGjBCpXRux8uchGT58gfb+esXogtOpe\/fuOmGC7Ln5ynQh9orP4wu1tmnbtq0ULFhQO6Seeuop51uZYwWbRajTNnx4+sXDmTkJ8bgmHCO\/d\/RPNuJdsOiR\/c6lSonkyydy4YXG5A4Jq6aCZJ0333xTi5VZtmXLljollh1jrVu31imJiPmaa65JV\/AZYQUbBTh\/XccHziKvuZoRfGfBApEhQ5L3ZIB4FSx9h+PwjjtE2MSlJkQlPHPKQzixurAjrH\/\/\/il56m5jVi1RooTeIbYcp0AUWMFGiCu8SZOcCxHC91avNk6Sm24SGT8++UzleBQsA\/OcOSJXXSWSP78Ra\/v2ZCed8DtEAmtbEig6duwoF198sd6lQxoipjSbApiJo8EKNgKYSZ95RuSGGyhE7lyMAkSLT4IjKZs3F7n3XhOiSRbiTbA4nCj3c\/75RqxkMz38sAmJeZ1rkUJ+OnFYUhUp9ufuxc4KVrCZgKeQMsWIldigN3wRLXT2Rx+JTJ1qBJwsxJNgmT3HjROpVcs4l4gf\/\/vfxhMeBKxgw8DMShiiTx9j1voBsy3rH3eA5XeQQBGNmRVvxItgWap062ZCUIj1nHPMpg43uSUIWMGGgeUFWUA48RBaLMCjzEYNnsv27c7FBCMeBEsft2ljEvpPPlnUetMkkQTN32AFGwLCpPO8aW6xhJrGPAfitpdcYgLzkXgg44kgC5b+xlGLc6lAATOzXnaZyJo1wbR6rGA9MKPOmiXSoIGJs+YkZP\/glcQpxd8hkQiqYPEpkBVYr55xLjGzkvSC1RPUuLkVrAOz2rBhJpMFMziLTrxswe8ko8Y7u\/\/yi\/MfcUxQBcsASTIEQi1USGTs2Mhi67mJFawCkZDc\/fe\/m3zdWK1Xo4X1U5UqxvER1BE\/EoImWGbW0aPNrMrfqXRpkRdfzLllUHawglVgAr31VnBc914++UTkrLNEunc3f7+gDCbRECTBMghSHYS\/C+tVLCpi61mJr+YGSStYOig7MdWchF0kJFvUqJF6T2e8EATB0t\/Evq++2ggVM5jECJxL8URSChbTh45CBPECMyupkZjvgInMbBEPM25uCxbfACmFLHn4O5C5RNjGu6UvXkgqwfJyM1uRIsjoGs\/eWMx40iUpHB\/0pIvcFCxhM35\/1apmZsXJRAgtHtar6ZE0gkWsxFcffNDEOyOs2xxY2FBNMjopk6y\/cZYFldwSLJvY\/\/c\/E1\/FBCaDia2nQfcEhyNpBItZREL3bbeJ+FQPK9dhEMJaaNbMCCGITjPIacHyXMga++c\/zf5V2t\/+JjJxYvwnpSS8YL1rPEzHeDWFwkFdqM6dU9d\/ChI5KVicS+yqwfogtooZTDIK9ZziOTTmktCCxQvMZuPPP3cuJAms28jUCoqZnFOCxYqi0iFhGzcZgnJJibSVMWEFS6ofwXA2jbPGSyYYqKjYSJU\/ZpbcjjHmhGCxpNi2yHvF7ylf3lSKoCxrIpFwgqXj8KCSZsY+1g8+cG4kGZTJpaRoixZmPydb+HKLWAuWAWrCBJFKlczvOPNMUyAvqGv67JBwgsWpwEiL657TEeIlgyVWUGIU4VLxL7eIpWBJhqBQ+amnmvUqG88p4+MtaZpIJJxgcSpRoZ3K7xYDa1rvOo7aw15nXKyJlWApakfKZokS5mc3bWq85om2PdFLQggW759PZw0lBVRwdAt65wR+C5bBhgHouutEihQxP7dTJ5GPP058iyruBUsQnPXLLbfk7KwRz+CI4gW\/9Vbz7GKdSOC3YPH8szbHE0yaIUeHJEpsPTPiWrA4FTiThZ\/JFjRLZDCwsWSYPNmIljVfLGcmPwXLOT7nnmt+VsWKxlIg6ytZBuu4FSxHZXToYDKX8AQn8rolVpBIQnE5YraxfOH9ECyeYE6+c0\/BIzeYM5L37EkuyypuBYsXkFPVyGrJjeoQiYT3hW\/d2v\/yONkV7HffmcqVJUuan0FO8HvvxXdOcFaJW8FiwsXL9rJ4gjVtnTqmAkcUR76EJTuCJSeYAmnFipnvs3Zdtcp4vpORuBEsnmAKPBNTTNbOygkYBBEEZ9cS0ySOm93nnVXBMmDUrWt22\/DdXr3MBv5kHqTjQrCsXwiOc2oYMVY7q8YWrBeWHIRJCJ9kN2k+K4JlWxxOJZIhyAnmbKJ4LZHjJ4EXLCM+nUVpDxwkibDjIl5AuKHe46wIJlrBEidmozmfZ906ZoypHmkH6iwKluPfly1bphtHv0dDtILlqHzWMImYFxpPYBZTpQMrh3Ir0YgnUsHi6ccTzElxfJaqhlTfj2XIKd6IWrAItEePHuqBmrMue+KdiIJIBOt9GeisRD53Jp7AK0tZGsTHTphIayJFIlh21XCuDckQNBL5qQpiZ9XURCXYv9TTW7BggT492hXs36lsFQWZCRZxsiE7EQpoJyIICGcQFfIbN3YuZkI4wTIgs2+3YUOzXmV2JeWQd8CSlqgEu3\/\/fn1qNELNly+fesAnyWmnnaYeeuQ2SzjB4ujAK0nJE5Ih7OgaXOhy\/AsuOAa9\/+8lI8FiAq9bJ1KmjLnHQVQYbCTFWNInKsHOnDlTC7VQoUJSq1Yt9YBP0eL9IYpdwhkJluA4R2WwTmLdapMh4gvOqHn+eWPGhjoG0xMsgzPppO4eVjacUyBvy5Yf5Ysv1sv69Sfahg0b9EnmHIyc7EQs2EOHDslFF12kZ9WmTZtKr169pFSpUlqwM2bMcD6VORkJFk8wtXdI7LZOhvgCS4iDqsmSwptP\/WRvwXOvYCmMhgnMBnOOyOBazZomxn7w4G\/qPeinzOKCqdqpp56ql15vqJH8cEbTeJIQsWAnT56sxcmsOmTIEPnwww+levXq+toDRNkjJCPBEndLb01riR9wSiG8K68Uuf32EzOtV7BUAcETzLY4qhnWry+ycKEZpDdv3iwtWrTQ7xStbt26cvbZZyuTuYyeKLDsJk2apKyv5DW\/IhLsjh07pEaNGvqhna9s1uXLl+uHW6dOHf1gL+NAzQhp1eo79Z356uesVib2r9a5lIAQ6WNXjauruXOPSNWqq1S\/z5MKFbZL3rx\/6VTDli1FVqw44av4SE3T7iRQSdnKTArzlK3NBFG7dm39\/hVRSl\/HwjdJyVSwrBsGqYWHa548+uij2lv8888\/a\/HycHnIv0SgvCNHjkiDBv3Ud3pK0aL3KxN7jowZ87t2NNmWuK1PnzlSosTDut\/z5HlASpbcoWdaKkZ4lz+zZ8+W4sWL63fKa7Uxo44aNUqJvJi+R1gxWclUsCtXrpR69erpB4VJcu+998rEiRN1c0fDsmXL6lk3M7Zu3Sonn9xAfedn1SaqEbOv5M+\/Tw0Exp1vWyK239SM2lX197uqHVL9fZW0b\/+mdjKGRgHeeust9fmC+p36H2skD\/Pnz9dWHvcqVKjgXE0+wgr2V7UoYUZl0c+DouXPn18\/VBomCtcI7bDGzYzvVC8VLHie+s4MKVBgkBoIRiiz6JA2jWxL1HZEzjijpxqox6l+n6fWo63lgw8+dN6IE2DJjRkzJuU9+4RzNj2QVecuwUpQxClJCSvYpUuXSv369fVDYuF\/7bXXpmoNGjRQHXGyFC5cWP6J+y8TMKUfe2yQtGs3SB58cLTMmLFczeB\/qcZMbluitv\/+d47cf\/94NbM+KSNGjNRLo1DIoOvcuXOKYL8Iqf5NJOL000+3gnX+TANhnMcee0zNhAX0Qxo8eLCsXbs2VZsyZYqeafPmzSu3UfohAugsTGPWwNEkXFjil+PHj8uBAwdk27ZtciyDPFOsr0aNGul3rWbNmtrR6WXs2LEpa9jmxP+SlAwFS4L\/zTffrB\/QOeeck+YBwqZNm7TXzn2IPwX5CDVLoNmyZYu24niXGPzJqnPB6TRgwAC9HOP+q5QaSVIyFCwz4Lhx46RTp04ydepU+T2dXcx4hrt166Y\/8\/jjj+tR0mLJChs3bkxxOA0bNkyOeop0rVixQho2bKjvkQewh0JOSUqGgsWMIeXw66+\/1s6njNi+fbv+DDOw9yFbLNFA2qvrxHzhhRf0rIrPY9WqVdpf4op55MiR+nqyEtbpZLHkFA8\/TJzWOJxYXnXv3l06dOigY\/2EE7lO\/DWZZ1ewgrUEAiIOrmCZTTF93dBhuXLlpH\/\/\/tqSS+bZFaxgLYGgSZMmegeYt5FHTLhw8eLF2qFpowpWsJaAQFRi586dqdr333+vw4v4UywGK1iLJY6wgrVY4ggrWIsljrCCtVjiCCtYiyWOsIK1WOIGkf8HJ4qJ7zLe+IMAAAAASUVORK5CYII=\" y=\"1\"><\/image> <\/g> <\/svg><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-05-24 01:57:47","option_type":"txt","len":0},{"id":"5694","post_id":"7141","mon_id":"1158924","chapter_id":"1159174","question":"<p>Cho h&igrave;nh l\u1eadp ph\u01b0\u01a1ng ABCD.A&#39;B&#39;C&#39;D&#39;. Trong c&aacute;c c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng sau, c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng&nbsp;n&agrave;o vu&ocirc;ng g&oacute;c v\u1edbi nhau?<\/p>","options":["<strong>A. <\/strong>AA&#39; v&agrave; BB&#39;","<strong>B. <\/strong>AB v&agrave; BD","<strong>C. <\/strong>BA&#39; v&agrave; BD","<strong>D. <\/strong>AA&#39; v&agrave; BD"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.&nbsp;<\/strong>AA&#39; v&agrave; BD<\/span><span style=\"color:#16a085;\"><\/span><\/p><p>Ta c&oacute; AA&#39;&nbsp;&perp; (ABCD) n&ecirc;n AA&#39;&nbsp;&perp; BD.<\/p><p><span class=\"svgedit\"><svg height=\"178\" width=\"236\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"180\" id=\"canvas_background\" width=\"238\" 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>&lt;title&gt;&lt;\/title><image height=\"178\" id=\"svg_1\" width=\"236\" x=\"2\" 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\" y=\"2\"><\/image> <\/g> <\/svg><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-05-24 02:02:10","option_type":"txt","len":2},{"id":"5697","post_id":"7141","mon_id":"1158924","chapter_id":"1159174","question":"<p>Cho h&igrave;nh h\u1ed9p ch\u1eef nh\u1eadt ABCD.A&#39;B&#39;C&#39;D&#39;&nbsp;g&oacute;c gi\u1eefa AA&#39;&nbsp;v&agrave; (ABCD)&nbsp;l&agrave;<\/p>","options":["<strong>A. <\/strong>90&deg;","<strong>B. <\/strong>30&deg;","<strong>C. <\/strong>60&deg;","<strong>D. <\/strong>45&deg;"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.&nbsp;<\/strong>90&deg;<\/span><\/p><p>Ta c&oacute; AA&#39;&nbsp;&perp; (ABCD) n&ecirc;n (AA&#39;, (ABCD)) = 90&deg;<\/p><p><span class=\"svgedit\"><svg height=\"178\" width=\"236\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"180\" id=\"canvas_background\" width=\"238\" 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>&lt;title&gt;&lt;\/title><image height=\"178\" id=\"svg_1\" width=\"236\" x=\"-1\" 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