Among the following figures, equilateral triangle, isosceles trapezoid and parallelogram have a right triangle with an angle equal to 45°, how many are axisymmetric figures
下列图形中，等边三角形、等腰梯形、平行四边形，有一个角等于45°的直角三角形，是轴对称图形的有多少个
<result>3</result>