nex_math/data/question_images/generated_321203f2033a4ca1ba2b819a4cb2fd6e.svg

<svg xmlns='http://www.w3.org/2000/svg' width='320' height='220'><rect width='320' height='220' fill='white'/><line x1='20' y1='160' x2='300' y2='160' stroke='black'/><polygon points='300,160 292,156 292,164' fill='black'/><line x1='160' y1='20' x2='160' y2='200' stroke='black'/><polygon points='160,20 156,28 164,28' fill='black'/><line x1='160' y1='20' x2='160' y2='200' stroke='red' stroke-dasharray='5,4'/><polyline points='60,60 160,160 260,60' fill='none' stroke='blue' stroke-width='2'/><circle cx='110' cy='110' r='3' fill='blue'/><circle cx='210' cy='110' r='3' fill='blue'/><line x1='110' y1='110' x2='210' y2='110' stroke='gray' stroke-dasharray='4,3'/><text x='305' y='165' font-size='12'>x</text><text x='165' y='25' font-size='12'>y</text><text x='168' y='175' font-size='12'>O</text><text x='170' y='45' font-size='12' fill='red'>y轴对称</text></svg>